v0.1.1

Change Points:

• Fix the duration decoding problems (find by @Natooz)
• Add some missed bindings like Track.program and Track.is_drum
• change Note.end() from a function back to a property Note.end, and maintain the Note.end_time() funciton
• generate new stubs (the pyi files)
• change score.typing to score.unit
• sort and sort_inplace function have been added to each list type(without key argument support currently)

There are still lots of work to do, and the interface is still not stable.

Thanks to all for their support and encouragement