Fix a typo in Features documentation
Merge remote-tracking branch 'customcommander/fix-typos' into live-docs
[yui] Build
Merge branch 'live-docs' into dev-master
Merge branch 'dev-master' into dev-3.x
[yui] Build
Lang.sub(): Move existing unit tests into separate test case
Lang.sub(): Harden existing unit tests
Lang.sub(): Implement nested placeholders