Release beta 7

Full Changelog: v1.0.1...v2.0.0-beta.7

Update code to use prop vs attr for safari(may break older IE support)

v2.0.0-beta.6

remove attr set for safari(may break old IE)

fix for safari order of operation issue prop vs attr

v2.0.0-beta.4

add fix for safari prop vs attr order of operation issue