Add GitHub workflow to handle new releases
Add GitHub workflow to handle new releases

Wheels will be created for GNU/Linux, macOS and Windows:
- PyPy 3.7
- CPython 3.6 - 3.9

- Fixes #19.
- Fixes #50.
- Fixes #51.
- Fixes #56.
- Fixes #57.
- Fixes #61.
- Fixes #62.

pytries/marisa-trie,pytries/marisa-trie