Not compatable with OpenFl 4.0.0

[jarbot]

The Tilesheet class has been removed from OpenFl 4.0.0

/opt/lib/haxelib/bitmapFont/0,9,4/bitmapFont/BitmapFont.hx:5: characters 7-31 : Type not found : openfl.display.Tilesheet

[jersonlatorre]

Same here :(

[jarbot]

@jersonlatorre we forked this so that it will work with openfl 4.0.0 it uses tilemap instead of tilesheet https://github.com/flowplay/BitmapFont