Reorganized all sorts of crap so we're doing simulation in the entity engine worker process now. Updates probably aren't fully synced yet.
Renamed `list_to_(vec|quat)` to `to_(vec|quat)`, and made them accept either lists or tuples. Also, updated pre_physics_rk4:update_from_proplist to tolerate either, so it doesn't choke if it gets JSON.
Added a clause to pre_channel_input:client_event similar to the one on client_response that protects against incoming messages while the client has no entity set.
Several fixes to pre_entity_engine_worker; attach a From pid to all messages, log an error on invali/unrecognizedd messages, handle the 'add_entity' message (for obvious reasons), and use dict:find() instead of dict:fetch() so it doesn't throw an exception.
Send entity updates to the 'entity_updates' process group instead of 'entity_engines', so the engine worker process can get updates too; also, ignore empty update lists.
Correctly handle and send From pid in pre_entity_engine, don't try sending updates to the client of an entity that doesn't have a client, and warn on unrecognized messages.
Removed unnecessary/incorrect error message.
Removed ClientInfo parameter from the client_event function in various places, since it was unused and unnecessary.
Step one of removing included app structure.
Moved required deps to top level rebar.config

Also removed the included_apps directory.
Removed included_apps directory.
Added Makefile and fixed hooks in rebar.config
Fixed reltool lib_dirs
Moved exmaple data config info to real config

Documentation next to where it needs to be? Insanity!
devrel makes a devrel
Fixed buildcerts.sh to check the right place for certs.
devboot points to the rel start.

Updated success message and readme to reflect change.
devboot takes over other helper scripts

It does this by pointing to the actual scripts to do what is intended, and
with the usual commands.
Added a helper
Fixed inconsistant whitespace in Readme.md