2021.9

new: luajit bindings, DLL support, documentation generator and website
new: versioning fwk.dll file now
new: video_pause(), argc/v flag(), -DWITH_SELFIES=1, ui_image()
new: window_icon(), cooker_config()
new: die(), hexdump(), hexdumpf(),
new: RGB3(), RGB4(), sprite_update(),
new: app_name(), time_us(), sleep_us()
chg: sprite()->tile(), sprite_ex()->sprite(),
chg: time_human()->date_human(),
chg: ui_bool/float/string_const()->ui_const_bool/float/string()
fix: udp_sendto(), clock_gettime(), screenshot()
fix: fix #9, fix compilation on vanilla windows (no msvc, no gcc); embed vc140 runtime deps for ass2iqe.exe
fix: updated gamepad mappings
fix: tcc+win warnings, mingw64 warnings
fix: improved mingw detection
fix: OSX/Linux fixes