Made the base structure of the changelog
Upgraded the duel system

Duel broadcasting.
Force duel mode (With cVar to enable/disable it).
cVar to change duel distance.

Note: UNI_ControlPowers causes the cgame.qvm to no longer compile
anymore? It says it is undefined. Tr!force once said that one had to
write a clientside version of the function, but I am not sure?