html5shiv https://github.com/aFarkas/html5shiv/commit/f282719c58f2da8a42b9edbb3acf1d7f4bb9bd93
sprintf / vsprint https://github.com/alexei/sprintf.js/commit/2e852e4b7e3fd96b31f3a8e63e2393cee6e9b2a8
adding IE HTML5shiv and sprintf (plus minor refactorying)