Trying to fix up merge with master
Experimented with music block colour and some bug fixes.
Merge pull request #380 from apepers/master

Added three new Sprite blocks, removed some obsolete blocks from Breakout
add comment giving credit for the sprite code
Merge branch 'master' of https://github.com/waterbearlang/waterbear
updating dist files
fix for on key handler
Merge pull request #381 from apepers/master

Added Bounce Off block, fixed Breakout movement vector issues, and tided up excessively long scripts in sprite.json
Merge branch 'master' into 318_music_blocks

Conflicts:
	dist/javascript.css
	dist/javascript_runtime.js
	languages/javascript/voice.css
fix AudioContext to work in recent Firefox
fix loading when url ends with #
fix for earlier fix for audiocontext in Firefox, unbreak it in Chrome
Fixed Breakout sounds and added play for x seconds block
Merged voice update with current master