Wavyfm

Changed
- Increment minimum `requests` version to 2.26.0
- Increment default client timeout to 30 seconds

Added
- Added utility for parsing wavy.fm date strings (RFC3339): `wavyfm.util.datetime_from_string` (GH-5)
- Added __repr__ to `wavfym.users._WavyProfileEndpoints`

Fixes
- Fix setup.py project metadata

Added
- Authentication through Client Credentials
- v1beta metrics: get total listens
- v1beta metrics: get total users
- v1beta metrics: get user listens leaderboard
- v1beta users: get user by username, user ID, discord ID, and URI
- v1beta users: get user profile
- v1beta users: get user history stats (total listens, total artists)
- v1beta users: get recently played
- v1beta users: get currently playing