• Updated sandbox URL (#93)
• Do not ignore custom JWT lifetime when using TokenCredentials (#108)
• Fix determination of push type for empty notifications with badge 0 (#109)
• LICENSE and test/eckey.pem included in source tarball (#110 #111)
• Changing DEFAULT_TOKEN_LIFETIME from 3600 to 2700 (#113)
• Added upper constraint for PyJWT (<2.0.0)