messy commit
Change this. to @ and cb to done
Fix caching of managers/view

The clearChache method did not call @clear. @clear should not remove
persistent views. The show method is still ambiguous, it is mostly used
to show the main view which renders subviews, but it can also be used to
render (persistent) subviews. This should be fixed.
Update version to 0.0.2
Add boundingbox to dom