#2017-01-16 (jam version): stereo audio, automatically pause when you click outside the window, and some minor fixes
# 2017-12-20 (1.2): full screen mode, use full resolution on high-density displays, moved the options to an in-game options menu, redid touch controls and made them automatically appear, and it should now work with the "Add to Home Screen" feature on iOS (also a bunch of internal changes that will hopefully make making more games easier)
# 2019-07-11 (1.3): added two-player mode, made the player's hitbox smaller and the graphic the same size as the hitbox, show when the player would get hurt when invincibility is enabled, added a key (shift) to move slower, added more options (slowdown, disable individual obstacles, sfx volume, sound test, controls)
# 2020-02-24 (1.3.1): hopefully make two-player mode work on touch screens (and maybe make touch screen support work a bit better); arrow keys work slightly differently on the Controls menu
# 2020-03-17 (1.4): add hard mode (survive for 1 minute/3600 points to see how to unlock it); add joystick-style touch controls and a new menu for touch control options (under "Controls"); pause the title screen when the window/tab is not in front (also some more internal changes that will hopefully make making more games easier)
# 2020-03-17 (1.4.1): fixed bug that sometimes prevented the hard mode code from being inputted on touch devices
# 2020-03-21 (1.4.2): changed "Touch options" to "Touch controls"; fixed potential bug in entering the hard mode code; fixed bug with audio sometimes not playing on some browsers (also some more internal changes that will hopefully make making more games easier)
# 2020-07-03 (1.4.3): added "Fill window" option; some bug fixes
# 2020-07-08 (1.4.4): fixed a bug where "Full screen" would result in a temporarily blank screen in certain situations; disabled touch control options that don't apply given other options you've selected
# 2024-01-06 (1.4.5): fixed a bug where it would show an error message if "Mute all games by default" had been selected in site options and the "Default Appearance"/"High Contrast" option hadn't been changed