diff --git a/README.md b/README.md
index 86aa22e6..180a5aa8 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ parts.  [Try Lenses!](https://calmm-js.github.io/partial.lenses/playground.html)
 [![npm version](https://badge.fury.io/js/partial.lenses.svg)](http://badge.fury.io/js/partial.lenses)
 [![Bower version](https://badge.fury.io/bo/partial.lenses.svg)](https://badge.fury.io/bo/partial.lenses)
 [![Build Status](https://travis-ci.org/calmm-js/partial.lenses.svg?branch=master)](https://travis-ci.org/calmm-js/partial.lenses)
-[![Code Coverage](https://img.shields.io/codecov/c/github/calmm-js/partial.lenses/master.svg)](https://codecov.io/github/calmm-js/partial.lenses?branch=master)
+[![Coverage Status](https://coveralls.io/repos/github/calmm-js/partial.lenses/badge.svg?branch=master)](https://coveralls.io/github/calmm-js/partial.lenses?branch=master)
 [![](https://david-dm.org/calmm-js/partial.lenses.svg)](https://david-dm.org/calmm-js/partial.lenses)
 [![](https://david-dm.org/calmm-js/partial.lenses/dev-status.svg)](https://david-dm.org/calmm-js/partial.lenses?type=dev)
 
diff --git a/docs/index.html b/docs/index.html
index 9a2f64fd..56f75fd0 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -48,7 +48,7 @@ <h1><a id="partial-lenses"></a> <a href="#contents">≡</a> <a href="https://git
 <p><a href="http://badge.fury.io/js/partial.lenses"><img src="https://badge.fury.io/js/partial.lenses.svg" alt="npm version"></a>
 <a href="https://badge.fury.io/bo/partial.lenses"><img src="https://badge.fury.io/bo/partial.lenses.svg" alt="Bower version"></a>
 <a href="https://travis-ci.org/calmm-js/partial.lenses"><img src="https://travis-ci.org/calmm-js/partial.lenses.svg?branch=master" alt="Build Status"></a>
-<a href="https://codecov.io/github/calmm-js/partial.lenses?branch=master"><img src="https://img.shields.io/codecov/c/github/calmm-js/partial.lenses/master.svg" alt="Code Coverage"></a>
+<a href="https://coveralls.io/github/calmm-js/partial.lenses?branch=master"><img src="https://coveralls.io/repos/github/calmm-js/partial.lenses/badge.svg?branch=master" alt="Coverage Status"></a>
 <a href="https://david-dm.org/calmm-js/partial.lenses"><img src="https://david-dm.org/calmm-js/partial.lenses.svg" alt=""></a>
 <a href="https://david-dm.org/calmm-js/partial.lenses?type=dev"><img src="https://david-dm.org/calmm-js/partial.lenses/dev-status.svg" alt=""></a></p>
 <h2><a id="contents"></a> <a href="#contents">≡</a> <a href="https://github.com/calmm-js/partial.lenses/blob/master/README.md#contents">■</a> Contents</h2>
diff --git a/package-lock.json b/package-lock.json
index 36200aa8..f52289f9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -192,9 +192,9 @@
       "dev": true
     },
     "@types/node": {
-      "version": "9.6.6",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-9.6.6.tgz",
-      "integrity": "sha512-SJe0g5cZeGNDP5sD8mIX3scb+eq8LQQZ60FXiKZHipYSeEFZ5EKml+NNMiO76F74TY4PoMWlNxF/YRY40FOvZQ==",
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-10.0.0.tgz",
+      "integrity": "sha512-kctoM36XiNZT86a7tPsUje+Q/yl+dqELjtYApi0T5eOQ90Elhu0MI10rmYk44yEP4v1jdDvtjQ9DFtpRtHf2Bw==",
       "dev": true
     },
     "acorn": {
@@ -221,13 +221,15 @@
       }
     },
     "ajv": {
-      "version": "4.11.8",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-4.11.8.tgz",
-      "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
+      "version": "5.5.2",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
+      "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
       "dev": true,
       "requires": {
         "co": "4.6.0",
-        "json-stable-stringify": "1.0.1"
+        "fast-deep-equal": "1.1.0",
+        "fast-json-stable-stringify": "2.0.0",
+        "json-schema-traverse": "0.3.1"
       }
     },
     "ajv-keywords": {
@@ -281,12 +283,6 @@
         }
       }
     },
-    "argv": {
-      "version": "0.0.2",
-      "resolved": "https://registry.npmjs.org/argv/-/argv-0.0.2.tgz",
-      "integrity": "sha1-7L0W+JSbFXGDcRsb2jNPN4QBhas=",
-      "dev": true
-    },
     "arr-diff": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
@@ -336,9 +332,9 @@
       "dev": true
     },
     "assert-plus": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-0.2.0.tgz",
-      "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ=",
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
       "dev": true
     },
     "async-each": {
@@ -354,9 +350,9 @@
       "dev": true
     },
     "aws-sign2": {
-      "version": "0.6.0",
-      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.6.0.tgz",
-      "integrity": "sha1-FDQt0428yU0OW4fXY81jYSwOeU8=",
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
+      "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=",
       "dev": true
     },
     "aws4": {
@@ -371,7 +367,7 @@
       "integrity": "sha1-UCq1SHTX24itALiHoGODzgPQAvE=",
       "dev": true,
       "requires": {
-        "babel-core": "6.26.0",
+        "babel-core": "6.26.2",
         "babel-polyfill": "6.26.0",
         "babel-register": "6.26.0",
         "babel-runtime": "6.26.0",
@@ -400,9 +396,9 @@
       }
     },
     "babel-core": {
-      "version": "6.26.0",
-      "resolved": "https://registry.npmjs.org/babel-core/-/babel-core-6.26.0.tgz",
-      "integrity": "sha1-rzL3izGm/O8RnIew/Y2XU/A6C7g=",
+      "version": "6.26.2",
+      "resolved": "https://registry.npmjs.org/babel-core/-/babel-core-6.26.2.tgz",
+      "integrity": "sha512-rFKFnHY8sbRSqja2O5eTx0z0Na5hukdtsFt7X9xdBFXMurrJ5YoY78Y/2/EuNZIaDQKEJSfxSMePfsymxt0CZg==",
       "dev": true,
       "requires": {
         "babel-code-frame": "6.26.0",
@@ -706,9 +702,9 @@
       }
     },
     "babel-plugin-transform-es2015-modules-commonjs": {
-      "version": "6.26.0",
-      "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-modules-commonjs/-/babel-plugin-transform-es2015-modules-commonjs-6.26.0.tgz",
-      "integrity": "sha1-DYOUApt9xqvhqX7xgeAHWN0uXYo=",
+      "version": "6.26.2",
+      "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-modules-commonjs/-/babel-plugin-transform-es2015-modules-commonjs-6.26.2.tgz",
+      "integrity": "sha512-CV9ROOHEdrjcwhIaJNBGMBCodN+1cfkwtM1SbUHmvyy35KGT7fohbpOxkE2uLz1o6odKK2Ck/tz47z+VqQfi9Q==",
       "dev": true,
       "requires": {
         "babel-plugin-transform-strict-mode": "6.24.1",
@@ -826,7 +822,7 @@
       "integrity": "sha1-btAhFz4vy0htestFxgCahW9kcHE=",
       "dev": true,
       "requires": {
-        "babel-core": "6.26.0",
+        "babel-core": "6.26.2",
         "babel-runtime": "6.26.0",
         "core-js": "2.5.5",
         "home-or-tmp": "2.0.0",
@@ -926,12 +922,12 @@
       "dev": true
     },
     "boom": {
-      "version": "2.10.1",
-      "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
-      "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/boom/-/boom-4.3.1.tgz",
+      "integrity": "sha1-T4owBctKfjiJ90kDD9JbluAdLjE=",
       "dev": true,
       "requires": {
-        "hoek": "2.16.3"
+        "hoek": "4.2.1"
       }
     },
     "brace-expansion": {
@@ -1021,6 +1017,7 @@
       "requires": {
         "anymatch": "1.3.2",
         "async-each": "1.0.1",
+        "fsevents": "1.2.2",
         "glob-parent": "2.0.0",
         "inherits": "2.0.3",
         "is-binary-path": "1.0.1",
@@ -1056,17 +1053,6 @@
       "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
       "dev": true
     },
-    "codecov": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/codecov/-/codecov-3.0.0.tgz",
-      "integrity": "sha1-wnO4xPEpRXI+jcnSWAPYk0Pl8o4=",
-      "dev": true,
-      "requires": {
-        "argv": "0.0.2",
-        "request": "2.81.0",
-        "urlgrey": "0.4.4"
-      }
-    },
     "color-convert": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.1.tgz",
@@ -1223,6 +1209,27 @@
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
       "dev": true
     },
+    "coveralls": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/coveralls/-/coveralls-3.0.0.tgz",
+      "integrity": "sha512-ZppXR9y5PraUOrf/DzHJY6gzNUhXYE3b9D43xEXs4QYZ7/Oe0Gy0CS+IPKWFfvQFXB3RG9QduaQUFehzSpGAFw==",
+      "dev": true,
+      "requires": {
+        "js-yaml": "3.11.0",
+        "lcov-parse": "0.0.10",
+        "log-driver": "1.2.7",
+        "minimist": "1.2.0",
+        "request": "2.85.0"
+      },
+      "dependencies": {
+        "minimist": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
+          "dev": true
+        }
+      }
+    },
     "cross-spawn": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-5.1.0.tgz",
@@ -1235,12 +1242,23 @@
       }
     },
     "cryptiles": {
-      "version": "2.0.5",
-      "resolved": "https://registry.npmjs.org/cryptiles/-/cryptiles-2.0.5.tgz",
-      "integrity": "sha1-O9/s3GCBR8HGcgL6KR59ylnqo7g=",
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/cryptiles/-/cryptiles-3.1.2.tgz",
+      "integrity": "sha1-qJ+7Ig9c4l7FboxKqKT9e1sNKf4=",
       "dev": true,
       "requires": {
-        "boom": "2.10.1"
+        "boom": "5.2.0"
+      },
+      "dependencies": {
+        "boom": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/boom/-/boom-5.2.0.tgz",
+          "integrity": "sha512-Z5BTk6ZRe4tXXQlkqftmsAUANpXmuwlsF5Oov8ThoMbQRzdGTA1ngYRW160GexgOgjsFOKJz0LYhoNi+2AMBUw==",
+          "dev": true,
+          "requires": {
+            "hoek": "4.2.1"
+          }
+        }
       }
     },
     "dashdash": {
@@ -1250,14 +1268,6 @@
       "dev": true,
       "requires": {
         "assert-plus": "1.0.0"
-      },
-      "dependencies": {
-        "assert-plus": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
-          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-          "dev": true
-        }
       }
     },
     "date-fns": {
@@ -1388,18 +1398,6 @@
         "text-table": "0.2.0"
       },
       "dependencies": {
-        "ajv": {
-          "version": "5.5.2",
-          "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
-          "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
-          "dev": true,
-          "requires": {
-            "co": "4.6.0",
-            "fast-deep-equal": "1.1.0",
-            "fast-json-stable-stringify": "2.0.0",
-            "json-schema-traverse": "0.3.1"
-          }
-        },
         "ansi-regex": {
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
@@ -1669,9 +1667,9 @@
       "dev": true
     },
     "form-data": {
-      "version": "2.1.4",
-      "resolved": "https://registry.npmjs.org/form-data/-/form-data-2.1.4.tgz",
-      "integrity": "sha1-M8GDrPGTJ27KqYFDpp6Uv+4XUNE=",
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/form-data/-/form-data-2.3.2.tgz",
+      "integrity": "sha1-SXBJi+YEwgwAXU9cI67NIda0kJk=",
       "dev": true,
       "requires": {
         "asynckit": "0.4.0",
@@ -1679,18 +1677,547 @@
         "mime-types": "2.1.18"
       }
     },
-    "fs-readdir-recursive": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/fs-readdir-recursive/-/fs-readdir-recursive-1.1.0.tgz",
-      "integrity": "sha512-GNanXlVr2pf02+sPN40XN8HG+ePaNcvM0q5mZBd668Obwb0yD5GiUbZOFgwn8kGMY6I3mdyDJzieUy3PTYyTRA==",
-      "dev": true
-    },
-    "fs.realpath": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
-    },
+    "fs-readdir-recursive": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/fs-readdir-recursive/-/fs-readdir-recursive-1.1.0.tgz",
+      "integrity": "sha512-GNanXlVr2pf02+sPN40XN8HG+ePaNcvM0q5mZBd668Obwb0yD5GiUbZOFgwn8kGMY6I3mdyDJzieUy3PTYyTRA==",
+      "dev": true
+    },
+    "fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
+      "dev": true
+    },
+    "fsevents": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.2.tgz",
+      "integrity": "sha512-iownA+hC4uHFp+7gwP/y5SzaiUo7m2vpa0dhpzw8YuKtiZsz7cIXsFbXpLEeBM6WuCQyw1MH4RRe6XI8GFUctQ==",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "nan": "2.10.0",
+        "node-pre-gyp": "0.9.1"
+      },
+      "dependencies": {
+        "abbrev": {
+          "version": "1.1.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "ansi-regex": {
+          "version": "2.1.1",
+          "bundled": true,
+          "dev": true
+        },
+        "aproba": {
+          "version": "1.2.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "are-we-there-yet": {
+          "version": "1.1.4",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "delegates": "1.0.0",
+            "readable-stream": "2.3.6"
+          }
+        },
+        "balanced-match": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true
+        },
+        "brace-expansion": {
+          "version": "1.1.11",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "balanced-match": "1.0.0",
+            "concat-map": "0.0.1"
+          }
+        },
+        "chownr": {
+          "version": "1.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "code-point-at": {
+          "version": "1.1.0",
+          "bundled": true,
+          "dev": true
+        },
+        "concat-map": {
+          "version": "0.0.1",
+          "bundled": true,
+          "dev": true
+        },
+        "console-control-strings": {
+          "version": "1.1.0",
+          "bundled": true,
+          "dev": true
+        },
+        "core-util-is": {
+          "version": "1.0.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "debug": {
+          "version": "2.6.9",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "deep-extend": {
+          "version": "0.4.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "delegates": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "detect-libc": {
+          "version": "1.0.3",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "fs-minipass": {
+          "version": "1.2.5",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "minipass": "2.2.4"
+          }
+        },
+        "fs.realpath": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "gauge": {
+          "version": "2.7.4",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "aproba": "1.2.0",
+            "console-control-strings": "1.1.0",
+            "has-unicode": "2.0.1",
+            "object-assign": "4.1.1",
+            "signal-exit": "3.0.2",
+            "string-width": "1.0.2",
+            "strip-ansi": "3.0.1",
+            "wide-align": "1.1.2"
+          }
+        },
+        "glob": {
+          "version": "7.1.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "fs.realpath": "1.0.0",
+            "inflight": "1.0.6",
+            "inherits": "2.0.3",
+            "minimatch": "3.0.4",
+            "once": "1.4.0",
+            "path-is-absolute": "1.0.1"
+          }
+        },
+        "has-unicode": {
+          "version": "2.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "iconv-lite": {
+          "version": "0.4.21",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "safer-buffer": "2.1.2"
+          }
+        },
+        "ignore-walk": {
+          "version": "3.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "minimatch": "3.0.4"
+          }
+        },
+        "inflight": {
+          "version": "1.0.6",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "once": "1.4.0",
+            "wrappy": "1.0.2"
+          }
+        },
+        "inherits": {
+          "version": "2.0.3",
+          "bundled": true,
+          "dev": true
+        },
+        "ini": {
+          "version": "1.3.5",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "number-is-nan": "1.0.1"
+          }
+        },
+        "isarray": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "minimatch": {
+          "version": "3.0.4",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "brace-expansion": "1.1.11"
+          }
+        },
+        "minimist": {
+          "version": "0.0.8",
+          "bundled": true,
+          "dev": true
+        },
+        "minipass": {
+          "version": "2.2.4",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "safe-buffer": "5.1.1",
+            "yallist": "3.0.2"
+          }
+        },
+        "minizlib": {
+          "version": "1.1.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "minipass": "2.2.4"
+          }
+        },
+        "mkdirp": {
+          "version": "0.5.1",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "minimist": "0.0.8"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "needle": {
+          "version": "2.2.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "debug": "2.6.9",
+            "iconv-lite": "0.4.21",
+            "sax": "1.2.4"
+          }
+        },
+        "node-pre-gyp": {
+          "version": "0.9.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "detect-libc": "1.0.3",
+            "mkdirp": "0.5.1",
+            "needle": "2.2.0",
+            "nopt": "4.0.1",
+            "npm-packlist": "1.1.10",
+            "npmlog": "4.1.2",
+            "rc": "1.2.6",
+            "rimraf": "2.6.2",
+            "semver": "5.5.0",
+            "tar": "4.4.1"
+          }
+        },
+        "nopt": {
+          "version": "4.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "abbrev": "1.1.1",
+            "osenv": "0.1.5"
+          }
+        },
+        "npm-bundled": {
+          "version": "1.0.3",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "npm-packlist": {
+          "version": "1.1.10",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "ignore-walk": "3.0.1",
+            "npm-bundled": "1.0.3"
+          }
+        },
+        "npmlog": {
+          "version": "4.1.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "are-we-there-yet": "1.1.4",
+            "console-control-strings": "1.1.0",
+            "gauge": "2.7.4",
+            "set-blocking": "2.0.0"
+          }
+        },
+        "number-is-nan": {
+          "version": "1.0.1",
+          "bundled": true,
+          "dev": true
+        },
+        "object-assign": {
+          "version": "4.1.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "once": {
+          "version": "1.4.0",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "wrappy": "1.0.2"
+          }
+        },
+        "os-homedir": {
+          "version": "1.0.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "os-tmpdir": {
+          "version": "1.0.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "osenv": {
+          "version": "0.1.5",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "os-homedir": "1.0.2",
+            "os-tmpdir": "1.0.2"
+          }
+        },
+        "path-is-absolute": {
+          "version": "1.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "process-nextick-args": {
+          "version": "2.0.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "rc": {
+          "version": "1.2.6",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "deep-extend": "0.4.2",
+            "ini": "1.3.5",
+            "minimist": "1.2.0",
+            "strip-json-comments": "2.0.1"
+          },
+          "dependencies": {
+            "minimist": {
+              "version": "1.2.0",
+              "bundled": true,
+              "dev": true,
+              "optional": true
+            }
+          }
+        },
+        "readable-stream": {
+          "version": "2.3.6",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "core-util-is": "1.0.2",
+            "inherits": "2.0.3",
+            "isarray": "1.0.0",
+            "process-nextick-args": "2.0.0",
+            "safe-buffer": "5.1.1",
+            "string_decoder": "1.1.1",
+            "util-deprecate": "1.0.2"
+          }
+        },
+        "rimraf": {
+          "version": "2.6.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "glob": "7.1.2"
+          }
+        },
+        "safe-buffer": {
+          "version": "5.1.1",
+          "bundled": true,
+          "dev": true
+        },
+        "safer-buffer": {
+          "version": "2.1.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "sax": {
+          "version": "1.2.4",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "semver": {
+          "version": "5.5.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "set-blocking": {
+          "version": "2.0.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "signal-exit": {
+          "version": "3.0.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "string-width": {
+          "version": "1.0.2",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "code-point-at": "1.1.0",
+            "is-fullwidth-code-point": "1.0.0",
+            "strip-ansi": "3.0.1"
+          }
+        },
+        "string_decoder": {
+          "version": "1.1.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "safe-buffer": "5.1.1"
+          }
+        },
+        "strip-ansi": {
+          "version": "3.0.1",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "ansi-regex": "2.1.1"
+          }
+        },
+        "strip-json-comments": {
+          "version": "2.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "tar": {
+          "version": "4.4.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "chownr": "1.0.1",
+            "fs-minipass": "1.2.5",
+            "minipass": "2.2.4",
+            "minizlib": "1.1.0",
+            "mkdirp": "0.5.1",
+            "safe-buffer": "5.1.1",
+            "yallist": "3.0.2"
+          }
+        },
+        "util-deprecate": {
+          "version": "1.0.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "wide-align": {
+          "version": "1.1.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "string-width": "1.0.2"
+          }
+        },
+        "wrappy": {
+          "version": "1.0.2",
+          "bundled": true,
+          "dev": true
+        },
+        "yallist": {
+          "version": "3.0.2",
+          "bundled": true,
+          "dev": true
+        }
+      }
+    },
     "functional-red-black-tree": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz",
@@ -1713,14 +2240,6 @@
       "dev": true,
       "requires": {
         "assert-plus": "1.0.0"
-      },
-      "dependencies": {
-        "assert-plus": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
-          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-          "dev": true
-        }
       }
     },
     "glob": {
@@ -1806,19 +2325,19 @@
       "dev": true
     },
     "har-schema": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/har-schema/-/har-schema-1.0.5.tgz",
-      "integrity": "sha1-0mMTX0MwfALGAq/I/pWXDAFRNp4=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/har-schema/-/har-schema-2.0.0.tgz",
+      "integrity": "sha1-qUwiJOvKwEeCoNkDVSHyRzW37JI=",
       "dev": true
     },
     "har-validator": {
-      "version": "4.2.1",
-      "resolved": "https://registry.npmjs.org/har-validator/-/har-validator-4.2.1.tgz",
-      "integrity": "sha1-M0gdDxu/9gDdID11gSpqX7oALio=",
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/har-validator/-/har-validator-5.0.3.tgz",
+      "integrity": "sha1-ukAsJmGU8VlW7xXg/PJCmT9qff0=",
       "dev": true,
       "requires": {
-        "ajv": "4.11.8",
-        "har-schema": "1.0.5"
+        "ajv": "5.5.2",
+        "har-schema": "2.0.0"
       }
     },
     "has-ansi": {
@@ -1837,15 +2356,15 @@
       "dev": true
     },
     "hawk": {
-      "version": "3.1.3",
-      "resolved": "https://registry.npmjs.org/hawk/-/hawk-3.1.3.tgz",
-      "integrity": "sha1-B4REvXwWQLD+VA0sm3PVlnjo4cQ=",
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/hawk/-/hawk-6.0.2.tgz",
+      "integrity": "sha512-miowhl2+U7Qle4vdLqDdPt9m09K6yZhkLDTWGoUiUzrQCn+mHHSmfJgAyGaLRZbPmTqfFFjRV1QWCW0VWUJBbQ==",
       "dev": true,
       "requires": {
-        "boom": "2.10.1",
-        "cryptiles": "2.0.5",
-        "hoek": "2.16.3",
-        "sntp": "1.0.9"
+        "boom": "4.3.1",
+        "cryptiles": "3.1.2",
+        "hoek": "4.2.1",
+        "sntp": "2.1.0"
       }
     },
     "he": {
@@ -1855,9 +2374,9 @@
       "dev": true
     },
     "hoek": {
-      "version": "2.16.3",
-      "resolved": "https://registry.npmjs.org/hoek/-/hoek-2.16.3.tgz",
-      "integrity": "sha1-ILt0A9POo5jpHcRxCo/xuCdKJe0=",
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/hoek/-/hoek-4.2.1.tgz",
+      "integrity": "sha512-QLg82fGkfnJ/4iy1xZ81/9SIJiq1NGFUMGs6ParyjBZr6jW2Ufj/snDqTHixNlHdPNwN2RLVD0Pi3igeK9+JfA==",
       "dev": true
     },
     "home-or-tmp": {
@@ -1871,12 +2390,12 @@
       }
     },
     "http-signature": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/http-signature/-/http-signature-1.1.1.tgz",
-      "integrity": "sha1-33LiZwZs0Kxn+3at+OE0qPvPkb8=",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/http-signature/-/http-signature-1.2.0.tgz",
+      "integrity": "sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=",
       "dev": true,
       "requires": {
-        "assert-plus": "0.2.0",
+        "assert-plus": "1.0.0",
         "jsprim": "1.4.1",
         "sshpk": "1.14.1"
       }
@@ -2203,15 +2722,6 @@
       "integrity": "sha1-NJptRMU6Ud6JtAgFxdXlm0F9M0A=",
       "dev": true
     },
-    "json-stable-stringify": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/json-stable-stringify/-/json-stable-stringify-1.0.1.tgz",
-      "integrity": "sha1-mnWdOcXy/1A/1TAGRu1EX4jE+a8=",
-      "dev": true,
-      "requires": {
-        "jsonify": "0.0.0"
-      }
-    },
     "json-stable-stringify-without-jsonify": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz",
@@ -2230,12 +2740,6 @@
       "integrity": "sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=",
       "dev": true
     },
-    "jsonify": {
-      "version": "0.0.0",
-      "resolved": "https://registry.npmjs.org/jsonify/-/jsonify-0.0.0.tgz",
-      "integrity": "sha1-LHS27kHZPKUbe1qu6PUDYx0lKnM=",
-      "dev": true
-    },
     "jsprim": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.1.tgz",
@@ -2246,14 +2750,6 @@
         "extsprintf": "1.3.0",
         "json-schema": "0.2.3",
         "verror": "1.10.0"
-      },
-      "dependencies": {
-        "assert-plus": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
-          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-          "dev": true
-        }
       }
     },
     "kind-of": {
@@ -2274,6 +2770,12 @@
         "marked": "0.3.19"
       }
     },
+    "lcov-parse": {
+      "version": "0.0.10",
+      "resolved": "https://registry.npmjs.org/lcov-parse/-/lcov-parse-0.0.10.tgz",
+      "integrity": "sha1-GwuP+ayceIklBYK3C3ExXZ2m2aM=",
+      "dev": true
+    },
     "levn": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/levn/-/levn-0.3.0.tgz",
@@ -2301,6 +2803,12 @@
       "integrity": "sha512-UejweD1pDoXu+AD825lWwp4ZGtSwgnpZxb3JDViD7StjQz+Nb/6l093lx4OQ0foGWNRoc19mWy7BzL+UAK2iVg==",
       "dev": true
     },
+    "log-driver": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/log-driver/-/log-driver-1.2.7.tgz",
+      "integrity": "sha512-U7KCmLdqsGHBLeWqYlFA0V0Sl6P08EE1ZrmA9cxjUE0WVqT9qnyVDPz1kzpFEP0jdJuFnasWIfSd7fsaNXkpbg==",
+      "dev": true
+    },
     "loose-envify": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.3.1.tgz",
@@ -2464,6 +2972,13 @@
       "integrity": "sha1-MHXOk7whuPq0PhvE2n6BFe0ee6s=",
       "dev": true
     },
+    "nan": {
+      "version": "2.10.0",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.10.0.tgz",
+      "integrity": "sha512-bAdJv7fBLhWC+/Bls0Oza+mvTaNQtP+1RyhhhvD95pgUJz6XM5IzgmxOkItJ9tkoCiplvAnXI1tNmmUD/eScyA==",
+      "dev": true,
+      "optional": true
+    },
     "natural-compare": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/natural-compare/-/natural-compare-1.4.0.tgz",
@@ -5285,9 +5800,9 @@
       "dev": true
     },
     "performance-now": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-0.2.0.tgz",
-      "integrity": "sha1-M+8wxcd9TqIcWlOGnZG1bY8lVeU=",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
+      "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=",
       "dev": true
     },
     "pify": {
@@ -5366,9 +5881,9 @@
       "dev": true
     },
     "qs": {
-      "version": "6.4.0",
-      "resolved": "https://registry.npmjs.org/qs/-/qs-6.4.0.tgz",
-      "integrity": "sha1-E+JtKK1rD/qpExLNO/cI7TUecjM=",
+      "version": "6.5.1",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.1.tgz",
+      "integrity": "sha512-eRzhrN1WSINYCDCbrz796z37LOe3m5tmW7RQf6oBntukAG1nmovJvhnwHHRMAfeoItc1m2Hk02WER2aQ/iqs+A==",
       "dev": true
     },
     "ramda": {
@@ -5534,28 +6049,28 @@
       }
     },
     "request": {
-      "version": "2.81.0",
-      "resolved": "https://registry.npmjs.org/request/-/request-2.81.0.tgz",
-      "integrity": "sha1-xpKJRqDgbF+Nb4qTM0af/aRimKA=",
+      "version": "2.85.0",
+      "resolved": "https://registry.npmjs.org/request/-/request-2.85.0.tgz",
+      "integrity": "sha512-8H7Ehijd4js+s6wuVPLjwORxD4zeuyjYugprdOXlPSqaApmL/QOy+EB/beICHVCHkGMKNh5rvihb5ov+IDw4mg==",
       "dev": true,
       "requires": {
-        "aws-sign2": "0.6.0",
+        "aws-sign2": "0.7.0",
         "aws4": "1.7.0",
         "caseless": "0.12.0",
         "combined-stream": "1.0.6",
         "extend": "3.0.1",
         "forever-agent": "0.6.1",
-        "form-data": "2.1.4",
-        "har-validator": "4.2.1",
-        "hawk": "3.1.3",
-        "http-signature": "1.1.1",
+        "form-data": "2.3.2",
+        "har-validator": "5.0.3",
+        "hawk": "6.0.2",
+        "http-signature": "1.2.0",
         "is-typedarray": "1.0.0",
         "isstream": "0.1.2",
         "json-stringify-safe": "5.0.1",
         "mime-types": "2.1.18",
         "oauth-sign": "0.8.2",
-        "performance-now": "0.2.0",
-        "qs": "6.4.0",
+        "performance-now": "2.1.0",
+        "qs": "6.5.1",
         "safe-buffer": "5.1.2",
         "stringstream": "0.0.5",
         "tough-cookie": "2.3.4",
@@ -5614,7 +6129,7 @@
       "dev": true,
       "requires": {
         "@types/estree": "0.0.38",
-        "@types/node": "9.6.6"
+        "@types/node": "10.0.0"
       }
     },
     "rollup-plugin-babel": {
@@ -5800,12 +6315,12 @@
       }
     },
     "sntp": {
-      "version": "1.0.9",
-      "resolved": "https://registry.npmjs.org/sntp/-/sntp-1.0.9.tgz",
-      "integrity": "sha1-ZUEYTMkK7qbG57NeJlkIJEPGYZg=",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/sntp/-/sntp-2.1.0.tgz",
+      "integrity": "sha512-FL1b58BDrqS3A11lJ0zEdnJ3UOKqVxawAkF3k7F0CVN7VQ34aZrV+G8BZ1WC9ZL7NyrwsW0oviwsWDgRuVYtJg==",
       "dev": true,
       "requires": {
-        "hoek": "2.16.3"
+        "hoek": "4.2.1"
       }
     },
     "source-map": {
@@ -5849,14 +6364,6 @@
         "getpass": "0.1.7",
         "jsbn": "0.1.1",
         "tweetnacl": "0.14.5"
-      },
-      "dependencies": {
-        "assert-plus": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
-          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-          "dev": true
-        }
       }
     },
     "string-width": {
@@ -5936,18 +6443,6 @@
         "string-width": "2.1.1"
       },
       "dependencies": {
-        "ajv": {
-          "version": "5.5.2",
-          "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
-          "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
-          "dev": true,
-          "requires": {
-            "co": "4.6.0",
-            "fast-deep-equal": "1.1.0",
-            "fast-json-stable-stringify": "2.0.0",
-            "json-schema-traverse": "0.3.1"
-          }
-        },
         "ansi-styles": {
           "version": "3.2.1",
           "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
@@ -6082,12 +6577,6 @@
       "integrity": "sha1-rOEWq1V80Zc4ak6I9GhTeMiy5Po=",
       "dev": true
     },
-    "urlgrey": {
-      "version": "0.4.4",
-      "resolved": "https://registry.npmjs.org/urlgrey/-/urlgrey-0.4.4.tgz",
-      "integrity": "sha1-iS/pWWCAXoVRnxzUOJ8stMu3ZS8=",
-      "dev": true
-    },
     "user-home": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/user-home/-/user-home-1.1.1.tgz",
@@ -6124,14 +6613,6 @@
         "assert-plus": "1.0.0",
         "core-util-is": "1.0.2",
         "extsprintf": "1.3.0"
-      },
-      "dependencies": {
-        "assert-plus": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
-          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-          "dev": true
-        }
       }
     },
     "vlq": {
diff --git a/package.json b/package.json
index b914d636..4752d5b4 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "docs": "klipse-github-docs-generator && cp node_modules/infestines/dist/infestines.min.js docs/",
     "lint": "eslint src test",
     "prepare": "concurrently \"npm run lint\" \"npm run docs\" \"npm run dist && npm run test\"",
-    "report-coverage": "nyc report --reporter=lcov > coverage.lcov && codecov",
+    "report-coverage": "nyc report --reporter=text-lcov | coveralls",
     "test": "nyc mocha && nyc report -r html mocha",
     "watch": "concurrently \"npm run watch:dist\" \"npm run watch:docs\" \"livereload docs\" \"npm run watch:test\"",
     "watch:dist": "watch-run -d 500 -i -p 'src/**/*.js' npm run dist",
@@ -66,8 +66,8 @@
     "babel-polyfill": "^6.26.0",
     "babel-register": "^6.26.0",
     "benchmark": "^2.1.4",
-    "codecov": "^3.0.0",
     "concurrently": "^3.5.1",
+    "coveralls": "^3.0.0",
     "eslint": "^4.19.1",
     "klipse-github-docs-generator": "^0.3.3",
     "livereload": "^0.7.0",