7.5.0

• Updated Airship SDK to 16.7.2
• Updated Gimbal SDK to 4.8.0
• Avoid potential crash when Airship isn't flying yet.

7.4.0

• Updated Airship SDK to 16.5.0
• Updated Gimbal SDK to 4.7.0

7.3.0

• Updated Airship SDK to 16.1.1
• Updated Gimbal SDK to 4.6.0

7.2.0

• Updated Airship SDK to 14.6.0
• Updated Gimbal SDK to 4.5.2

7.1.0

• Updated Airship SDK to 14.2.0
• Updated Gimbal SDK to 4.5.0

7.0.0

• Removed gimbalApiKey parameters from start methods. Applications should set the API key directly
  on the Gimbal instance in Application#onCreate or use the new enableGimbalApiKeyManagement(String)
  method to allow the adapter to manage setting the Gimbal API key.

6.1.0

• Updated Airship SDK to 13.1.0
• Added missing nullability annotations