- agent attribute `next_malfunction`is not used anymore, it will be removed fully in future versions.
-`break_agent()` function is introduced which induces malfunctions in agent according to poisson process
-`_fix_agent_after_malfunction()` fixes agents after attribute `malfunction == 0`
- Intoduced the concept of malfunction generators. Here you can add different malfunction models in future updates. Currently it only loads from files and parameters.
### Changes in `Environment`
- moving of member variable `distance_map_computed` to new class `DistanceMap`
