* Mobs now retreat to where they were when they were roaming; not their
spawn point
* /toggleai still sends them back to their spawn point however
* Fixed a bug where mobs would respawn where they were killed instead of
their proper spawn point
* Fixed mobs roaming despite simulatemobs being set to false
* Updated tdata submodule
* Cleaned up protocol selection.
* cmake now works even if protocol option is omitted
* make now supports protocol selection
* removed PACKET_VERSION/CNPROTO_VERSION* redundancy
* ubuntu appveyor script has yet to be written
* cleaned up some trailing spaces
* Add some test items.
Ironically, this change is untested.
* [bugfix] Transmit MOTD when entering the game, not when loading screen fades.
This fixes unnecessary retransmission when /warping.
* Move to PowerShell script for Windows build
* Allow CMake to override struct version
* PACKET_VERSION option
* Rename CNPROTO_CUSTOM to CNPROTO_OVERRIDE
Co-authored-by: Raymonf <Raymonf@users.noreply.github.com>
