refactor(kff.BindingView): optimize collectionItemChange method to not refilter the whole collection when item render status does not change
refactor(kff.Binder): move "model path watcher" to a new standalone class ModelPathWatcher
refactor(kff.Binder): modelChange method should work without an argument or with event argument, not with true argument
refactor(kff.Binder): move evaluation of setter or getter to kff.BindingView class
refactor(kff.BindingView): move parsing of binding regex to separate method

This will allow correct parsing of collection binding modifiers such as ':as' or ':nobind'
feat(kff.View): implement refreshAll method (WIP)

refreshAll should refresh all data binders in all subviews.
fix(kff.BindingView): collection binder nobind property must be cloned