Merge branch 'next' into touching_fixes

.circleci/config.yml

CMakeLists.txt

README.md

SRB2.cbp

appveyor.yml

src/CMakeLists.txt

src/Makefile

src/Makefile.cfg

src/d_clisrv.c

src/d_clisrv.h

src/d_main.c

src/d_net.c

src/d_net.h

src/d_netcmd.c

src/d_netcmd.h

src/d_netfil.c

src/d_netfil.h

src/doomdef.h

src/f_finale.c

src/g_game.c