Prepare to trim skills
Cleanup headers and remove all uses of va_list except logging
Enumify option, opt1, opt2, and opt3
Purge some unused functions
Minor script.cpp tweakage
Remove unused script functions
Remove sending of packets the client can't handle
Enumify some more things ... maybe even everything
Add cxxstdio, bump license to gpl3+
Use cxxstdio
Add warning newlines; fix crash on exit.
Remove /commands with equivalent @commands
Kindly inform Travis-CI that those build failures were expected
Improve warnings; fix const_db.txt bug.
Improve warning management more
Make incoming packets read-only
Change both sites, not one

This caused "zero length packet" in client.
Begin to trim skills.
Remove all non-NPC skills
Remove PC/mob disguises and hard-coded classes