Remove the !player->abilities.flying guard that was incorrectly added around the Ctrl-sprint block in Input.cpp during the KBM refactor. This prevented Ctrl+W from initiating sprint while flying in creative mode. Sprinting on the ground in both survival and creative worked fine.
The sprint flag now sets correctly whenever Ctrl+W is held, including while flying. LocalPlayer::aiStep() still properly gates setSprinting() with onGround, enoughFoodToSprint, isUsingItem etc.
Fixessmartcmd/MinecraftConsoles#470
Added functionality to drop items using the Q key, with support for dropping entire stacks when Ctrl is held. Included checks to prevent dropping items while destroying blocks.