Check $rootScope.$$phase before doing digest

[bodinaren]

Use $rootScope.$$phase to make sure a digest is not already in progress before running $rootScope.$digest(). Not doing so can result a Error: $digest already in progress.

[hamchapman]

Number 2 on the angular anti-pattern list is about this https://github.com/angular/angular.js/wiki/Anti-Patterns

I do sympathise with the problem though, i.e. getting the $digest already in progress error, however, I'm hesitant to add the phase check. I feel like there must be a better option and one that might involve restructuring the whole library, but currently I don't have time to dig into it too much.

[hamchapman]

Closing this as currently it's not something I'm comfortable merging