bump to 0.9.4
Moved some stuff around added links and

updated what's new. Added a list to the committers of v0.9.2 to 0.9.4.
Adds some p's.
Merge pull request #203 from albertjan/site-update

Site update

Check to see whether the .zip and .tar.gz files are on the site after an update like this...
Add http:// for the coursera link
remove jquery and jslinting
somehow the turtle doesn't get drawn anymore
some context issues
draws a straight line
turtle turns again, incomprehensible cross func
clean render()
couldn't draw just a circle
Fix clear_canvas
Adds tests for vectors
turtle fiddle html
Some fixes to bugs @bnmnetp found
adds codemirror
Fix dot's
filling fixed
Adds a way to get notified when drawing is done