added ability to do set and compare basic variables in FlxUI markup
Merge branch 'dev' of https://www.github.com/HaxeFlixel/flixel-ui into dev
added endline() function to U.hx
Merge branch 'dev' of https://www.github.com/HaxeFlixel/flixel-ui into dev
Merge branch 'dev' of https://www.github.com/HaxeFlixel/flixel-ui into dev