Improved environment for oldIE
Improved JSHint config in build environment
Fixed strict mode in AMD template and minor JSHint warnings
Fixed export method notation, now ES3 backward compatible
Made demos ready for oldIE
Fixed listAllProperties for IE8
Improved error message for conflicts with native properties; fixed failing test for IE11

Test was too narrow.
Switched test syntax from should to expect, making them compatible with older IE
Fixed export method notation in tests, now ES3 backward compatible
Updated build