New Espruino - Testers Needed!

The USB issue seems to be because I switched to using the -Os compile flags. No idea why it's so unreliable (some builds work, some don't!). I've just switched back to -O3 and tweaked the size down in other ways.

Thanks for tracking the leak down (it would have been from before) - it makes my life so much easier (just fixed it in a few minutes). Hopefully I've managed to so something about the odd characters too.