Add callbacks
Add properties concerning scores
Add callback
Introduce Max Combo
Fix bugs
Record in scorebook
modify to inherit parameters at the link of other song
Add lyricSize option
Merge remote-tracking branch 'remotes/hiromu/parameters'

Conflicts:
	sample/index.html
Merge branch 'master' into gh-pages
Update builds
Merge branch 'gh-pages' of github.com:hakatashi/YouTyping into gh-pages