2024.8

new: added window_fps_vsync() (@zpl-zak)
new: added WINDOW_VSYNC, WINDOW_TRUE_BORDERLESS (@zpl-zak)
new: added window_destroy() (@zpl-zak)
new: added mapf() andf unmixf() (@zpl-zak)
new: reworked ddraw to support configurable line width (@zpl-zak)
fix: fixed timestep in ui_notify() (@zpl-zak)
fix: improved fullscreen (fixes glfw so it disables top-most windows when unfocused) (@zpl-zak)
chg: brought poly() back (@zpl-zak)
chg: switched to system() in app_exec() (osx) (@zpl-zak)
chg: update docs

brk: vsync off by default (@zpl-zak)

lab: engine legal screen (@zpl-zak)
lab: join/split C99 port (@zpl-zak)