v0.2.0-rc3

• improve timing stability some more. essentially now guaranteeing that "frame = time_ms * 6 / 100" returns
  consecutive frame numbers, provided the module can be run at 60 fps
• add support to redirect text output to the console for debugging using control code 6
• update curlywas:
• • add support for else if
• • add support for escape sequences in strings
• • add support for char literals
• • add support for binop-assignment, eg. +=, ^=, <<= etc. (also support for the tee operator: +:=)