nz-toggle

Hi, We added a dependency to angularjs which solves a runtime problem when we build using the prod profile defined in our gulp file. By adding this dependency gulp (or some of the tools executed by gulp) knows nz-toggle depends on angularjs and gulp knows how to create single js file with all dependencies.

I've had some trouble when using nz-toggle with md-virtual-repeater. As ngModel was watched for changes and then updated. When Virtual repeater when you are scrolling down on a table, for example, each element was acting like if it has changed. Solved by calling the update function only in the function, instead of calling it on the watch.

directive nzToggle do not use DI annotation. so ng-strict-di throw an error