* Initial code to get unifiied image handling
- not yet tested
- still using FileImageSource in some areas
* Updated the button renderers and added tests for Android
* Updated a few more of the Android renderers
- also added an `IsEmpty` property to the ImageSource to indicate if this source actually contains data that can be used to try and load an image
- added a few more "tests"
- includes the changes for #4916
* A few more changes
* Keep the default page for the sample app
* Changing everything to ImageSource and going from there
- Android, iOS, UWP and WPF are compiling
- GTK, Mac and Tizen are not yet finished
- Added a new interface for UWP to return an IconElement in addition to ImageSource (for app bar buttons)
- not tested yet, nor are there any tests
* Renamed the property to be more useful
* All of Android is now async
- still only minimal tests
- also removed the bits that are in https://github.com/xamarin/Xamarin.Forms/pull/4948
* Update Xamarin.Forms.Platform.cs
* A few fixes to whitespace and nameof()
* Updated iOS and UWP wirth async image sources
* A few fixes and WPF support
* A few fixes for Android after the big merge
* Updated a few more loaders:
- ios
- macos
- tizen
- gtk
* Fix a few things after the merge
* - cast type to FileImageSource
* fix setting of title content if icon doesn't load
* fix IButtonLayoutManager to return correct control
* remove cast and add pack api
* - fix timing issues with layout/invalidation
* - remove aggresive element invalidations for now
* first set of api changes
* obsolete old apis and create new ones for ImageSource
* obsolete messages and static ordering fix
* add tests
* switch default on windows to show images on tabs
* - XStatic obsolete fix
* fix NPC test and bring back alert check on uwp
Fixes#3207Fixes#4689
* Allow UI tests to bypass "manual" navigation to isses pages
* Add missing Preserve attribute
* Make Issue198 test work with direct navigation
* Remove empty UI tests
* Fix error handling for iOS
* Use navigation which works for subsequent TestNavigationPages on iOS
* Fix race condition in 39530 test
Remove master page nesting when doing direct nav for UI tests
* Set up and run a single instance of Control Gallery for UI tests
* Force NavigateToIssue to wait for main page appearing to deal with iOS timing
* Move remaining UI tests into Issues namespace
* Change the connection check URL so it'll work on iOS
* Make Appearing Gallery tests work without restarting app
* Prevent ContextActions tests from stepping on each other
* Make context menu test more robust
* Move ButtonExtensions back to Controls namespace
* Have test 774 dismiss the action sheet before ending
* Update UITest package to 2.0.0 stable
* Make 2948 restore orientation when it's done
* Null check on PageController before calling SendDisappearing
* Adding a wait for the root page in the core tests
* Add consecutive tests reset to prevent memory slog on older iOS devices
Matthew Leibowitz
E.Z. Hart
Jason Smith