1.0.1.2 is OUT!! Faster Spine Json export

- Faster JSON Export : Previously, as the number of animations in the JSON file increased, exporting a new animation took a very long time. Now, it is much faster than before...
-Background music : Adding background music makes it easier to synchronize your animations with the music. Supported formats: all formats supported by FMOD (wav, ogg, mp3 ...)