Added
- Ability to test delete access via check_credentials or standalone
Changed
- Malformed URL raises on init
Fixed
- testing write access requires delete permission (11)
- Incorrectly returning True on non 401/404 exceptions on some key-related tests (5)
- check_credentials now safe from exception when using `failsafe=True` (1)
- Requiring python3.8+ (was already not working with 3.6 and 3.7 due to f-string)