This PR will lead us towards the Promised Day, for in its wake there shall be much celebration and ecstasy as this world becomes a world suitable for developer hegemony. The first strike is thusly;
All << is converted into to_chat().
* Openturf icon fixes and improvements
* more things
* Remove some pointless/bad layering/planing
* yeah well I didn't need this anyways
* Refactor Z mimickry to be at /turf
* more refactoring
* Cleanup, use turf/flags instead of z_mimic_flags
* Fix turf/Entered()
* misc optimizations
* fixes
* Major icon smoothing optimizations
* Speed up boot some more
* Fix AO
* Remove some redundant code
* Tie Z-lights to Z-mimic instead of openturfs
* Fix an opacity issue with no_mutate turfs
* Fix some issues with Z-mimic AO not properly clearing
* Fix some OT->OT changetuf bugs
* Add helpers for changing Z-mimic operational state on turfs
* Fix some merge issues, change how F_CUT smoothhint works a bit.
* indentation
* SSopenturf -> SSzcopy
