v1.3

Changes

• Add tempo changes supports to the MIDI exporting feature (f14fe7c);
• Skip missing layers and custom instruments data when opening .nbs files (5aaf305).
• Add lyrics support to the datapack export feature (for my personal use).

Technical Changes

• Updated dependencies.

Bugfixes

• Fixed IndexError when exporting some .nbs files to MIDI files (#6, 4a32825)
• Fixed JSON import not working (4a32825)