Minor changes for better integration into "pypi.org"

1.3.1

Optimized setup

Merge branch 'release/1.3'

features:

• Dissolve callback functions into abstract methods in client-layer.
  • This is more intuitive and simpler to use then callbacks.

fixed:

• Fixed player is not alive during spawn and before very first move.
• Fixed behavior for bots which sends no steer command.

other:

• Merged topic and adapter.
• Simply set logging level everywhere.