diff --git a/Pipfile.lock b/Pipfile.lock
index 3844c97..561c2a5 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -34,6 +34,7 @@
         },
         "gunicorn": {
             "hashes": [
+                "sha256:9dcc4547dbb1cb284accfb15ab5667a0e5d1881cc443e0677b4882a4067a807e",
                 "sha256:e0a968b5ba15f8a328fdfd7ab1fcb5af4470c28aaf7e55df02a99bc13138e6e8"
             ],
             "index": "pypi",
@@ -49,33 +50,31 @@
         },
         "numpy": {
             "hashes": [
-                "sha256:2428b109306075d89d21135bdd6b785f132a1f5a3260c371cee1fae427e12727",
-                "sha256:377751954da04d4a6950191b20539066b4e19e3b559d4695399c5e8e3e683bf6",
-                "sha256:4703b9e937df83f5b6b7447ca5912b5f5f297aba45f91dbbbc63ff9278c7aa98",
-                "sha256:471c0571d0895c68da309dacee4e95a0811d0a9f9f532a48dc1bea5f3b7ad2b7",
-                "sha256:61d5b4cf73622e4d0c6b83408a16631b670fc045afd6540679aa35591a17fe6d",
-                "sha256:6c915ee7dba1071554e70a3664a839fbc033e1d6528199d4621eeaaa5487ccd2",
-                "sha256:6e51e417d9ae2e7848314994e6fc3832c9d426abce9328cf7571eefceb43e6c9",
-                "sha256:719656636c48be22c23641859ff2419b27b6bdf844b36a2447cb39caceb00935",
-                "sha256:780ae5284cb770ade51d4b4a7dce4faa554eb1d88a56d0e8b9f35fca9b0270ff",
-                "sha256:878922bf5ad7550aa044aa9301d417e2d3ae50f0f577de92051d739ac6096cee",
-                "sha256:924dc3f83de20437de95a73516f36e09918e9c9c18d5eac520062c49191025fb",
-                "sha256:97ce8b8ace7d3b9288d88177e66ee75480fb79b9cf745e91ecfe65d91a856042",
-                "sha256:9c0fab855ae790ca74b27e55240fe4f2a36a364a3f1ebcfd1fb5ac4088f1cec3",
-                "sha256:9cab23439eb1ebfed1aaec9cd42b7dc50fc96d5cd3147da348d9161f0501ada5",
-                "sha256:a8e6859913ec8eeef3dbe9aed3bf475347642d1cdd6217c30f28dee8903528e6",
-                "sha256:aa046527c04688af680217fffac61eec2350ef3f3d7320c07fd33f5c6e7b4d5f",
-                "sha256:abc81829c4039e7e4c30f7897938fa5d4916a09c2c7eb9b244b7a35ddc9656f4",
-                "sha256:bad70051de2c50b1a6259a6df1daaafe8c480ca98132da98976d8591c412e737",
-                "sha256:c73a7975d77f15f7f68dacfb2bca3d3f479f158313642e8ea9058eea06637931",
-                "sha256:d15007f857d6995db15195217afdbddfcd203dfaa0ba6878a2f580eaf810ecd6",
-                "sha256:d76061ae5cab49b83a8cf3feacefc2053fac672728802ac137dd8c4123397677",
-                "sha256:e8e4fbbb7e7634f263c5b0150a629342cc19b47c5eba8d1cd4363ab3455ab576",
-                "sha256:e9459f40244bb02b2f14f6af0cd0732791d72232bbb0dc4bab57ef88e75f6935",
-                "sha256:edb1f041a9146dcf02cd7df7187db46ab524b9af2515f392f337c7cbbf5b52cd"
+                "sha256:0cfe07133fd00b27edee5e6385e333e9eeb010607e8a46e1cd673f05f8596595",
+                "sha256:11a1f3816ea82eed4178102c56281782690ab5993251fdfd75039aad4d20385f",
+                "sha256:2762331de395739c91f1abb88041f94a080cb1143aeec791b3b223976228af3f",
+                "sha256:283d9de87c0133ef98f93dfc09fad3fb382f2a15580de75c02b5bb36a5a159a5",
+                "sha256:3d22662b4b10112c545c91a0741f2436f8ca979ab3d69d03d19322aa970f9695",
+                "sha256:41388e32e40b41dd56eb37fcaa7488b2b47b0adf77c66154d6b89622c110dfe9",
+                "sha256:42c16cec1c8cf2728f1d539bd55aaa9d6bb48a7de2f41eb944697293ef65a559",
+                "sha256:47ee7a839f5885bc0c63a74aabb91f6f40d7d7b639253768c4199b37aede7982",
+                "sha256:5a311ee4d983c487a0ab546708edbdd759393a3dc9cd30305170149fedd23c88",
+                "sha256:5dc65644f75a4c2970f21394ad8bea1a844104f0fe01f278631be1c7eae27226",
+                "sha256:6ed0d073a9c54ac40c41a9c2d53fcc3d4d4ed607670b9e7b0de1ba13b4cbfe6f",
+                "sha256:76ba7c40e80f9dc815c5e896330700fd6e20814e69da9c1267d65a4d051080f1",
+                "sha256:818b9be7900e8dc23e013a92779135623476f44a0de58b40c32a15368c01d471",
+                "sha256:a024181d7aef0004d76fb3bce2a4c9f2e67a609a9e2a6ff2571d30e9976aa383",
+                "sha256:a955e4128ac36797aaffd49ab44ec74a71c11d6938df83b1285492d277db5397",
+                "sha256:a97a954a8c2f046d3817c2bce16e3c7e9a9c2afffaf0400f5c16df5172a67c9c",
+                "sha256:a97e82c39d9856fe7d4f9b86d8a1e66eff99cf3a8b7ba48202f659703d27c46f",
+                "sha256:b55b953a1bdb465f4dc181758570d321db4ac23005f90ffd2b434cc6609a63dd",
+                "sha256:bb02929b0d6bfab4c48a79bd805bd7419114606947ec8284476167415171f55b",
+                "sha256:bece0a4a49e60e472a6d1f70ac6cdea00f9ab80ff01132f96bd970cdd8a9e5a9",
+                "sha256:e41e8951749c4b5c9a2dc5fdbc1a4eec6ab2a140fdae9b460b0f557eed870f4d",
+                "sha256:f71d57cc8645f14816ae249407d309be250ad8de93ef61d9709b45a0ddf4050c"
             ],
-            "markers": "python_version >= '3.7'",
-            "version": "==1.20.2"
+            "index": "pypi",
+            "version": "==1.22.0"
         },
         "pillow": {
             "hashes": [
@@ -97,6 +96,7 @@
                 "sha256:63728564c1410d99e6d1ae8e3b810fe012bc440952168af0a2877e8ff5ab96b9",
                 "sha256:66cc56579fd91f517290ab02c51e3a80f581aba45fd924fcdee01fa06e635812",
                 "sha256:6c32cc3145928c4305d142ebec682419a6c0a8ce9e33db900027ddca1ec39178",
+                "sha256:8b56553c0345ad6dcb2e9b433ae47d67f95fc23fe28a0bde15a120f25257e291",
                 "sha256:8bb1e155a74e1bfbacd84555ea62fa21c58e0b4e7e6b20e4447b8d07990ac78b",
                 "sha256:95d5ef984eff897850f3a83883363da64aae1000e79cb3c321915468e8c6add5",
                 "sha256:a013cbe25d20c2e0c4e85a9daf438f85121a4d0344ddc76e33fd7e3965d9af4b",
@@ -212,39 +212,47 @@
             "index": "pypi",
             "version": "==1.6.2"
         },
+        "setuptools": {
+            "hashes": [
+                "sha256:990a4f7861b31532871ab72331e755b5f14efbe52d336ea7f6118144dd478741",
+                "sha256:c1848f654aea2e3526d17fc3ce6aeaa5e7e24e66e645b5be2171f3f6b4e5a178"
+            ],
+            "markers": "python_version >= '3.7'",
+            "version": "==62.6.0"
+        },
         "six": {
             "hashes": [
-                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
-                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==1.15.0"
+            "version": "==1.16.0"
         },
         "sqlparse": {
             "hashes": [
-                "sha256:017cde379adbd6a1f15a61873f43e8274179378e95ef3fede90b5aa64d304ed0",
-                "sha256:0f91fd2e829c44362cbcfab3e9ae12e22badaa8a29ad5ff599f9ec109f0454e8"
+                "sha256:0c00730c74263a94e5a9919ade150dfc3b19c574389985446148402998287dae",
+                "sha256:48719e356bb8b42991bdbb1e8b83223757b93789c00910a616a071910ca4a64d"
             ],
             "markers": "python_version >= '3.5'",
-            "version": "==0.4.1"
+            "version": "==0.4.2"
         }
     },
     "develop": {
         "astroid": {
             "hashes": [
-                "sha256:ad63b8552c70939568966811a088ef0bc880f99a24a00834abd0e3681b514f91",
-                "sha256:bea3f32799fbb8581f58431c12591bc20ce11cbc90ad82e2ea5717d94f2080d5"
+                "sha256:3975a0bd5373bdce166e60c851cfcbaf21ee96de80ec518c1f4cb3e94c3fb334",
+                "sha256:ab7f36e8a78b8e54a62028ba6beef7561db4cdb6f2a5009ecc44a6f42b5697ef"
             ],
-            "markers": "python_version >= '3.6'",
-            "version": "==2.5.3"
+            "markers": "python_version ~= '3.6'",
+            "version": "==2.6.6"
         },
         "attrs": {
             "hashes": [
-                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
-                "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"
+                "sha256:2d27e3784d7a565d36ab851fe94887c5eccd6a463168875832a1be79c82828b4",
+                "sha256:626ba8234211db98e869df76230a137c4c40a12d72445c45d5f5b716f076e2fd"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==20.3.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==21.4.0"
         },
         "autopep8": {
             "hashes": [
@@ -263,39 +271,54 @@
         },
         "isort": {
             "hashes": [
-                "sha256:0a943902919f65c5684ac4e0154b1ad4fac6dcaa5d9f3426b732f1c8b5419be6",
-                "sha256:2bb1680aad211e3c9944dbce1d4ba09a989f04e238296c87fe2139faa26d655d"
+                "sha256:6f62d78e2f89b4500b080fe3a81690850cd254227f27f75c3a0c491a1f351ba7",
+                "sha256:e8443a5e7a020e9d7f97f1d7d9cd17c88bcb3bc7e218bf9cf5095fe550be2951"
             ],
-            "markers": "python_version >= '3.6' and python_version < '4.0'",
-            "version": "==5.8.0"
+            "markers": "python_version < '4.0' and python_full_version >= '3.6.1'",
+            "version": "==5.10.1"
         },
         "lazy-object-proxy": {
             "hashes": [
-                "sha256:17e0967ba374fc24141738c69736da90e94419338fd4c7c7bef01ee26b339653",
-                "sha256:1fee665d2638491f4d6e55bd483e15ef21f6c8c2095f235fef72601021e64f61",
-                "sha256:22ddd618cefe54305df49e4c069fa65715be4ad0e78e8d252a33debf00f6ede2",
-                "sha256:24a5045889cc2729033b3e604d496c2b6f588c754f7a62027ad4437a7ecc4837",
-                "sha256:410283732af311b51b837894fa2f24f2c0039aa7f220135192b38fcc42bd43d3",
-                "sha256:4732c765372bd78a2d6b2150a6e99d00a78ec963375f236979c0626b97ed8e43",
-                "sha256:489000d368377571c6f982fba6497f2aa13c6d1facc40660963da62f5c379726",
-                "sha256:4f60460e9f1eb632584c9685bccea152f4ac2130e299784dbaf9fae9f49891b3",
-                "sha256:5743a5ab42ae40caa8421b320ebf3a998f89c85cdc8376d6b2e00bd12bd1b587",
-                "sha256:85fb7608121fd5621cc4377a8961d0b32ccf84a7285b4f1d21988b2eae2868e8",
-                "sha256:9698110e36e2df951c7c36b6729e96429c9c32b3331989ef19976592c5f3c77a",
-                "sha256:9d397bf41caad3f489e10774667310d73cb9c4258e9aed94b9ec734b34b495fd",
-                "sha256:b579f8acbf2bdd9ea200b1d5dea36abd93cabf56cf626ab9c744a432e15c815f",
-                "sha256:b865b01a2e7f96db0c5d12cfea590f98d8c5ba64ad222300d93ce6ff9138bcad",
-                "sha256:bf34e368e8dd976423396555078def5cfc3039ebc6fc06d1ae2c5a65eebbcde4",
-                "sha256:c6938967f8528b3668622a9ed3b31d145fab161a32f5891ea7b84f6b790be05b",
-                "sha256:d1c2676e3d840852a2de7c7d5d76407c772927addff8d742b9808fe0afccebdf",
-                "sha256:d7124f52f3bd259f510651450e18e0fd081ed82f3c08541dffc7b94b883aa981",
-                "sha256:d900d949b707778696fdf01036f58c9876a0d8bfe116e8d220cfd4b15f14e741",
-                "sha256:ebfd274dcd5133e0afae738e6d9da4323c3eb021b3e13052d8cbd0e457b1256e",
-                "sha256:ed361bb83436f117f9917d282a456f9e5009ea12fd6de8742d1a4752c3017e93",
-                "sha256:f5144c75445ae3ca2057faac03fda5a902eff196702b0a24daf1d6ce0650514b"
-            ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
-            "version": "==1.6.0"
+                "sha256:043651b6cb706eee4f91854da4a089816a6606c1428fd391573ef8cb642ae4f7",
+                "sha256:07fa44286cda977bd4803b656ffc1c9b7e3bc7dff7d34263446aec8f8c96f88a",
+                "sha256:12f3bb77efe1367b2515f8cb4790a11cffae889148ad33adad07b9b55e0ab22c",
+                "sha256:2052837718516a94940867e16b1bb10edb069ab475c3ad84fd1e1a6dd2c0fcfc",
+                "sha256:2130db8ed69a48a3440103d4a520b89d8a9405f1b06e2cc81640509e8bf6548f",
+                "sha256:39b0e26725c5023757fc1ab2a89ef9d7ab23b84f9251e28f9cc114d5b59c1b09",
+                "sha256:46ff647e76f106bb444b4533bb4153c7370cdf52efc62ccfc1a28bdb3cc95442",
+                "sha256:4dca6244e4121c74cc20542c2ca39e5c4a5027c81d112bfb893cf0790f96f57e",
+                "sha256:553b0f0d8dbf21890dd66edd771f9b1b5f51bd912fa5f26de4449bfc5af5e029",
+                "sha256:677ea950bef409b47e51e733283544ac3d660b709cfce7b187f5ace137960d61",
+                "sha256:6a24357267aa976abab660b1d47a34aaf07259a0c3859a34e536f1ee6e76b5bb",
+                "sha256:6a6e94c7b02641d1311228a102607ecd576f70734dc3d5e22610111aeacba8a0",
+                "sha256:6aff3fe5de0831867092e017cf67e2750c6a1c7d88d84d2481bd84a2e019ec35",
+                "sha256:6ecbb350991d6434e1388bee761ece3260e5228952b1f0c46ffc800eb313ff42",
+                "sha256:7096a5e0c1115ec82641afbdd70451a144558ea5cf564a896294e346eb611be1",
+                "sha256:70ed0c2b380eb6248abdef3cd425fc52f0abd92d2b07ce26359fcbc399f636ad",
+                "sha256:8561da8b3dd22d696244d6d0d5330618c993a215070f473b699e00cf1f3f6443",
+                "sha256:85b232e791f2229a4f55840ed54706110c80c0a210d076eee093f2b2e33e1bfd",
+                "sha256:898322f8d078f2654d275124a8dd19b079080ae977033b713f677afcfc88e2b9",
+                "sha256:8f3953eb575b45480db6568306893f0bd9d8dfeeebd46812aa09ca9579595148",
+                "sha256:91ba172fc5b03978764d1df5144b4ba4ab13290d7bab7a50f12d8117f8630c38",
+                "sha256:9d166602b525bf54ac994cf833c385bfcc341b364e3ee71e3bf5a1336e677b55",
+                "sha256:a57d51ed2997e97f3b8e3500c984db50a554bb5db56c50b5dab1b41339b37e36",
+                "sha256:b9e89b87c707dd769c4ea91f7a31538888aad05c116a59820f28d59b3ebfe25a",
+                "sha256:bb8c5fd1684d60a9902c60ebe276da1f2281a318ca16c1d0a96db28f62e9166b",
+                "sha256:c19814163728941bb871240d45c4c30d33b8a2e85972c44d4e63dd7107faba44",
+                "sha256:c4ce15276a1a14549d7e81c243b887293904ad2d94ad767f42df91e75fd7b5b6",
+                "sha256:c7a683c37a8a24f6428c28c561c80d5f4fd316ddcf0c7cab999b15ab3f5c5c69",
+                "sha256:d609c75b986def706743cdebe5e47553f4a5a1da9c5ff66d76013ef396b5a8a4",
+                "sha256:d66906d5785da8e0be7360912e99c9188b70f52c422f9fc18223347235691a84",
+                "sha256:dd7ed7429dbb6c494aa9bc4e09d94b778a3579be699f9d67da7e6804c422d3de",
+                "sha256:df2631f9d67259dc9620d831384ed7732a198eb434eadf69aea95ad18c587a28",
+                "sha256:e368b7f7eac182a59ff1f81d5f3802161932a41dc1b1cc45c1f757dc876b5d2c",
+                "sha256:e40f2013d96d30217a51eeb1db28c9ac41e9d0ee915ef9d00da639c5b63f01a1",
+                "sha256:f769457a639403073968d118bc70110e7dce294688009f5c24ab78800ae56dc8",
+                "sha256:fccdf7c2c5821a8cbd0a9440a456f5050492f2270bd54e94360cac663398739b",
+                "sha256:fd45683c3caddf83abbb1249b653a266e7069a09f486daa8863fb0e7496a9fdb"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==1.7.1"
         },
         "mccabe": {
             "hashes": [
@@ -306,11 +329,11 @@
         },
         "packaging": {
             "hashes": [
-                "sha256:5b327ac1320dc863dca72f4514ecc086f31186744b84a230374cc1fd776feae5",
-                "sha256:67714da7f7bc052e064859c05c595155bd1ee9f69f76557e21f051443c20947a"
+                "sha256:dd47c42927d89ab911e606518907cc2d3a1f38bbd026385970643f9c5b8ecfeb",
+                "sha256:ef103e05f519cdc783ae24ea4e2e0f508a9c99b2d4969652eed6a2e1ea5bd522"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==20.9"
+            "markers": "python_version >= '3.6'",
+            "version": "==21.3"
         },
         "pluggy": {
             "hashes": [
@@ -322,19 +345,19 @@
         },
         "py": {
             "hashes": [
-                "sha256:21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3",
-                "sha256:3b80836aa6d1feeaa108e046da6423ab8f6ceda6468545ae8d02d9d58d18818a"
+                "sha256:51c75c4126074b472f746a24399ad32f6053d1b34b68d2fa41e558e6f4a98719",
+                "sha256:607c53218732647dff4acdfcd50cb62615cedf612e72d1724fb1a0cc6405b378"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==1.10.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==1.11.0"
         },
         "pycodestyle": {
             "hashes": [
-                "sha256:514f76d918fcc0b55c6680472f0a37970994e07bbb80725808c17089be302068",
-                "sha256:c389c1d06bf7904078ca03399a4816f974a1d590090fecea0c63ec26ebaf1cef"
+                "sha256:720f8b39dde8b293825e7ff02c475f3077124006db4f440dcbc9a20b76548a20",
+                "sha256:eddd5847ef438ea1c7870ca7eb78a9d47ce0cdb4851a5523949f2601d0cbbe7f"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.7.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==2.8.0"
         },
         "pylint": {
             "hashes": [
@@ -346,11 +369,11 @@
         },
         "pyparsing": {
             "hashes": [
-                "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1",
-                "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"
+                "sha256:2b020ecf7d21b687f219b71ecad3631f644a47f01403fa1d1036b0c6416d70fb",
+                "sha256:5026bae9a10eeaefb61dab2f09052b9f4307d44aee4eda64b309723d8d206bbc"
             ],
-            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.4.7"
+            "markers": "python_full_version >= '3.6.8'",
+            "version": "==3.0.9"
         },
         "pytest": {
             "hashes": [
@@ -360,6 +383,14 @@
             "index": "pypi",
             "version": "==6.2.3"
         },
+        "setuptools": {
+            "hashes": [
+                "sha256:990a4f7861b31532871ab72331e755b5f14efbe52d336ea7f6118144dd478741",
+                "sha256:c1848f654aea2e3526d17fc3ce6aeaa5e7e24e66e645b5be2171f3f6b4e5a178"
+            ],
+            "markers": "python_version >= '3.7'",
+            "version": "==62.6.0"
+        },
         "toml": {
             "hashes": [
                 "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b",