* [SC] Renamed various modules, other cleanups as well.
* [DH_AGENT,NEW] Allow documentation in behavior specification for agent definitions.
* [DH_AGENT,DH_AGENT_DOC,SC] Split off documentation predicate into separate module.
* [DH_AGENT_FORAGER,DH_AGENT_SCOUT,NEW] Finalized rewrite of bee agents, using mostly generic predicates.
* [DH_AGENT_INIT,NEW] New load file for loading the agent definitions.
* [DH_AGING,NEW] New module, implementing agent aging.
* [DH_POPULATION,FIX] Also reset the number of agents when a population is exited.
* [DH_SEARCH,NEW] Added the search results argument that collects search results from all searching agents.