modify method signature
add optional variable
fix bug
modify exnteds interface
add stream.Stream type
Merge pull request #2698 from horiuchi/bugfix

small bugfix
$id is a number on 1.3
Merge branch 'master' of github.com:borisyankov/DefinitelyTyped into angular-1.3
Merge pull request #2704 from pocesar/angular-1.3

Angular 1.3
AngularJS: Genericised angular.copy and added JSDoc
Made tests noImplicitAny compliant
Merge pull request #2706 from johnnyreilly/master

AngularJS: Genericised angular.copy and added JSDoc