* Simple Elevation implementation for BoxView
* More generic version
* Simplify the code a bit
* Add IElementConfiguration<T> to the descendants of Layout<View>
* Add Elevation support to everything on Android; update UI tests;
* Update docs
* [All] Normalize Obsolete attributes.
Make sure we include the version in which the member was deprecated and
consistent instructions for working around the deprecation, if
applicable.
* Update docs
* Remove InternalsVisibleTo from Core to XF.Platforms.*
* Changes per Jason's code review
* Move LockableObservableListWrapper to internals namespace
* Changes per Stephane's code review
* update docs
* Touch code to get CI to run tests
* Rebase; Update documentation
E.Z. Hart
Samantha Houts
kingces95
Jason Smith