add non-virtual optimize command class
add command
bugfix
change release commands
avoid optimizing native methods
trace ancestor classes when finding callee function
does not optimize interface/mixin/abstract classes
refactor
add a test
optimize members of abstract class as well
Merge branch 'master' into non-virtual-optimize
add a test
rename the command
Merge remote-tracking branch 'origin/master' into non-virtual-optimize

Conflicts:
	src/optimizer.jsx
Merge pull request #122 from jsx/wasabiz/non-virtual-optimize

new optimizer command: staticize non-virtual instance method