* fix error about pop
* location-history: add optional callbacks
* set handler on first tick
discovered by @dcposch
* Show error when media format is unsupported
Before this change, the player would just get stuck on the loading
screen forever without notifying the user.
* rm dist at start of build
* renderer style
* preload sound files for instant playback
The first time a sound file is played, the Audio object is cached.
5s after startup, all sound files are automatically preloaded.