Ashley would it be possible to have the spacing data field of the sprite font object support .fnt file as well as .json? This seems to be the standard format.
I want to convert text fonts to bitmaps for use with spritefont object, there are a number of apps that do it but they all output the spacing data to .fnt. along with the sprite sheet file.
There is something about converting .fnt to .json on GitHub but i dont understand it.
https://www.npmjs.com/package/bmfont2json
https://github.com/mattdesl/bmfont2json
I know there is the nice sprite font generator written by 
blackhornet but its windows only and i'm on mac.
https://www.construct.net/en/forum/game-development/tools-and-resources-27/sprite-font-generator-v3-64038
Or better yet it would be great if you just load a font into the spritefont object and c3 converts it for you.
Theres linked to some code that does it: http://www.codehead.co.uk/cbfg/