* options

* proof of concept

* pop

* test fix

* default options

* scale

* rotation

* null check

* refactor

* refactor

* refactoring

* fix tests

* Initial implementation of willAppear and willDisappear

Currently only implemented on pop in StackController

* call clearOptions on super
* TopTabs visible

* fix unit

* Currently doesn't work - need to implement custom TopTab view

* Implement selected and unselected toTab color

* Test options are applied when layout is visible

* Implement titleFontFamily in topTab option

* docs

* Pass TypefaceLoader instead of context