Update to latest speck

.npmignore

@@ -28,7 +28,6 @@ x64/
 x86/
 build/
 bld/
-typings/
 bin/
 obj/
 .vs/
@@ -43,4 +42,6 @@ lib/iterators.d.ts
 lib/iterators.ts
 lib/linq.ts
 lib/utilities.d.ts
-lib/utilities.ts
+lib/utilities.ts
+typings/chai-3.2.0.d.ts
+typings/mocha.2.2.5.d.ts

.vsnodetools.njsproj

@@ -64,7 +64,7 @@
       <TestFramework>Mocha</TestFramework>
     </TypeScriptCompile>
     <TypeScriptCompile Include="typings\chai-3.2.0.d.ts" />
-    <TypeScriptCompile Include="typings\es2015-shim.d.ts" />
+    <TypeScriptCompile Include="typings\es6-shim.d.ts" />
     <TypeScriptCompile Include="typings\mocha.2.2.5.d.ts" />
   </ItemGroup>
   <ItemGroup>

lib/iterators.ts

@@ -133,11 +133,12 @@ export class DefaultIfEmpty<T> extends IteratorBase<T> {
 
 export class ChunkBy<T, K, E, V> extends IteratorBase<T> {
 
+    private index = 0;
     private key: K;
     private box: Array<E>;;
 
     constructor(target: Iterator<T>,
-                private keySelect: (x: T) => K,
+                private keySelect: (x: T, i: number) => K,
                 private elementSelector: (x: T) => E, 
                 private resultSelector: (a: K, b: Iterable<E>) => V) {
         super(target);
@@ -155,7 +156,7 @@ export class ChunkBy<T, K, E, V> extends IteratorBase<T> {
                     return result;
                 } else return this._done;
             }
-            let newKey = this.keySelect(result.value);
+            let newKey = this.keySelect(result.value, this.index++);
             if (this.key !== newKey && this.box) {
                 let ret = { done: false, value: this.resultSelector(this.key, this.box) };
                 this.key = newKey;

lib/linq.ts

@@ -486,7 +486,7 @@ class EnumerableImpl<T> implements Enumerable<T>, Iterable<T>, IEnumerable<T> {
     }
 
 
-    public ChunkBy<K, E, V>(keySelect: (x: T) => K,
+    public ChunkBy<K, E, V>(keySelect: (x: T, i: number) => K,
         elementSelector: (x: T) => E = Constant.selfFn,
         resultSelector: (a: K, b: Iterable<E>) => V = (a, b) => b as any):
         Enumerable<V> {