* Disable AndroidUseLatestPlatformSdk in VS so VS stops auto-updating Android projects;
Remove XF.targets imports from projects which don't need it;
Make XF.targets imports conditional on existence of XFBT DLL in VS to avoid errors
* More consistent check for VS
* Apply nicer VS check logic to Xamarin.Forms.Xaml.UnitTests.csproj
* Fix missing "'"
* Re-add XF.targets imports to PagesGallery native projects
* Update repro to include header/footers with bound props
* [Android] Clear renderers of ListView header/footers
And don't call `RemoveAllViews`, because that causes the ObjectDisposedExceptions.
* Android AppLinks updated packages and refactor to comply with Firebase packages
* made nested classes internal
* removed notimplementedexception and added a Console log when on Failure
* removed Firebase init method. Changed Console for Android's native Exception logging
* formatted code styling with Visual Studio Community 2017 for Mac
* [Android] Update nuspec and gallery
* [Packages] Update android support packages for 25.4.0.2
* Obsolete IVisualElementRenderer.ViewGroup in favor of .View
* Fix NRE
* Changing TContainer in PlatformEffect to View
* Fix "View" type
* new VisualElementRenderer
* First attempt at a fast(er) button renderer
* Fast Label Renderer
* Let's try that again. Behold: Label Fast Renderer
* Move FrameRenderer into Fast Renderers
* Fix Disposable on VisualElementRenderer
* Simplify touch and click handlers
* Drop empty if clause
* [Android] Add initial Image fast renderer
* Split accessibility out to a separate helper class; fix tapgesture bug with label
* [Android] Small fixes to VisualElementRenderer
* Move accessiblity stuff to a separate class (which needs a good name)
* Prevent query from looking to parent for fast renderers
* [Android] ImageRenderer refactoring
* Fix elevation/z-index bugs with Button (e.g., 40173)
* Move SetLabeledBy to Accessibilitizer
* Un-break automation IDs for Labels
* Move gesture handling to its own class
* Split gesture and effect management into separate classes
* Remove unneeded packager from LabelRenderer
* LabelRenderer inherits from FormsTextView
* Batch updates to View
* Fix isOnParentRenderer check for non-Android platforms
* [Controls] Update Xamarin.Forms.ControlGallery.iOS.csproj
* [Android,IOS] Small fixes to rebase and use of Internals
* [Android] Ignroe warning for now
* Fast renderers now passing InputTransparent and IsEnabled tests
* Fast and legacy renderers now pass the Enabled and InputTransparent tests
* Change PlatformEffect back, default container to null
* Fix mangled using directives