possible fix for issue #1333
forgot to update graphic size in bitmap setter
font line height calculation fix
debug draw for bitmap text
bitmap text fieldWidth instead of rewriting width setter

(just like in FlxText)
changing the way of parsing text and storing glyph frames

(they are stored by charCode now)
ok, i think i fixed text height calculation finally
updateHitbox() little cleanup
FlxBar updateFilledBar() fix for blit render mode
renaming FlxBitmapTextField to FlxBitmapText
converting antialiasing into property with a setter (need it in bitmap text)
bitmap text antialiasing
FlxBitmapTextButton compile fix
Throw an error while building if the Haxe version is too low
Remove some outdated bitfive conditionals
Update unit tests for #1332