Update version number in html

Bump version number

Fix key input issue on macOS Sierra

Prep for release

Applet fix

Sound tweaks

Texture tweak

Add dock icon image

Add Changelog

Add door unlock sound

Modify gun bob to be a bit lower

Change background scaling

Gun cleanup

Decrease CPU usage, especially on Java 8

New audio engine (enable panning, better real-time volume changes, more simultaneous sounds)