Additional texture brush test; Dispose CGPattern before creating a new one.
Dispose CGPattern before creating a new one.
Clipboard: add null checks for Text and Html.
Merge branch 'corlissdev' of https://github.com/cwensley/Eto into dev

Conflicts:
	Source/Eto.Platform.Mac/Drawing/TextureBrushHandler.cs
Add operator +/- to Rectangle/F to offset a rectangle by values of a size or point
Add Screen.Bounds/WorkingArea/BitsPerPixel/IsPrimary
Add ScreenSection to show screen layout
Gtk: Fix getting all screens and window screen
Cleanup
Gtk: Fix setting control size when it is visible
Implement Control.UnLoad/OnUnLoad event for when a control is removed from a container
Mac: Fix adding control observers
Fully implement Window.SizeChanged/LocationChanged events
Wpf: Invalidate children for a Scrollable control when invalidating container
iOS: Track updates
Implement Control.MouseWheel event on all platforms
Cleanup
Remove Drag/Drop (for now)
Generator detection handles exceptions when attempting to create the generator instance, to allow fallback
Mac: when using Drawable.CreateGraphics, need to update clip/transform when its location changes due to scrolling or other reasons
Mac: Allow creating console apps by moving the initialization to the generator
Update all csproj files to be consistent and include global assembly info
iOS: Rename iOS projects to eliminate confusing/conflicting names