* New Python client API
    - Cleaner and more robust
    - Compatible with Python 2 and 3
    - Improved exception handling
    - Improved examples
    - Included methods for parsing the images
    - Better documentation
    - Protocol: renamed "ai_control" to "autopilot_control"
    - Merged testing client
  * Make CARLA start without client by default
  * Added wind effect to some trees and plants
  * Improvements to the existing weather presets
  * Build script: skip content download if up-to-date