Update toString() method in dijit._WidgetBase to return type string instead of String to be compatible with Object's toString() method.
Update msnodesql definitions de 0.2.1 + generics
Add test for query callback
Add podcast
Add myself to contributors
Fix contributors.md node-sqlserver was renamed msnodesql
Merge remote-tracking branch 'remotes/origin/RxJS' into RxJS
Add definitions for $animateProvider in angularjs

As per the docs [here](https://docs.angularjs.org/api/ng/provider/$animateProvider).
Aligned backpressure defintion to v2.3.
Removed clear, contains from CompositeDisposable.
Made SerialDisposable be an alias of SingleAssigmentDisposable.
Added helpers.isFunction; added thisArg to Observer.fromNotifier; added Observable.subscribeOn*.
Added tap, doOn*, tapOn*, throwError, catchError.
Add default $animateProvider in angular.d.ts
Improve $animate service typings
Add return type to register fn in $animateProvider
Add return type to cancel fn in $animate
Add AST type definitions to handlebars.d.ts

Also put a module around the "SafeString" type to fix the compiler error.
Fixed `takeLast`, added `pluck`, `config.useNativeEvents`.
Moved removed `rx.time` operators from rx.time-lite to rx.time.