* Make CurrentFrame return the actual frame index from the source atlas
* Start the animation controller playing, don't make the consumer manually call it initially
* Play is automatically called in the controller ctor
* Added property to get name of current animation
* Only copy reference files if user opts in by specifying property in csproj
* Update Kni solution to new project structure
* Update Fna solution to new project structure
* Bump version number to 4.0.0
* Update release workflow
* Remove old test
* FNA projects
* update actions
fixes MSBUILD : error MSB1011: Specify which project or solution file to
use because this folder contains more than one project or solution file.
* build tests
* remove test for issue #633
* FNA/XNA compatible
* GraphicsDevice Extensions
* remove MockGameWindow
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Co-authored-by: Christopher Whitley <103014489+AristurtleDev@users.noreply.github.com>