Add settings.ini setting and hwengine param to disable holiday silliness (hat changes, etc.)
settings.ini: In section [misc], add "holidaySilliness=false"
hwengine: Add --no-holiday-silliness to command-line
add_subdirectory(AmmoMenu)
add_subdirectory(Flags)
add_subdirectory(Graves)
add_subdirectory(Hats)
add_subdirectory(Hedgehog)
add_subdirectory(SuddenDeath)
add_subdirectory(Missions)
file(GLOB BaseSprites *.png)
list(REMOVE_ITEM BaseSprites *@2x.png)
install(FILES
${BaseSprites}
DESTINATION ${SHAREPATH}Data/Graphics)