* Move Broadcast functions from cChunkMap to cBroadcaster
- Remove cBroadcastInterface in favour of cBroadcaster.
- cChunk: Remove broadcast functions.
* resurect broadcast interface
* Absorb cBroadcaster into cWorld.
Removes the need for forwarding the function calls.
* Improve const-correctness
* Use Int8 instead of char
+ Comment `ForClients` functions
* Improve comments
* Broadcaster: Rename ForClients functions
* Change reinterpret_cast -> static_cast wherever possible
* Remove more unnecessary `const_cast`s.
reinterpret_casts should be avoided for the same reason as c-style casts - they don't do any type-checking. reinterpret_cast was mainly being used for down-casting in inheritance hierarchies but static_cast works just as well while also making sure that there is actually an inheritance relationship there.
