prevent quick join/quit flood. #1070
added threaded stuff in the menu and set version
window center position when windowed on Windows :3
fixed version string of the versionserver
made the demoplayer support 0.6.1 based demos
one more centering window in graphics
fixed frozen GUI caused by popups
fixed client crash on removing friends.
switched filenames of highlight and client chat msg
increased min rqrd connect time for clients to 1s.
improved chat msg spam protection
demo fix
Fixing atomics
Using MemoryBarrier() for CPUs not supporting SSE2
fixed make_release script on win64
prevent map edtr from crashing if ldd map is invld
fixed master server lookup for servers. #1047
fixed a server crash due to faulty offsets. #1173
made 0.6.3 release