Version bump to 1.3.0
Version bump to 1.3.0

marutosi/awesome_nested_set,dosire/awesome_nested_set,experteer/awesome_nested_set,collectiveidea/awesome_nested_set,manastech/awesome_nested_set,be9/awesome_nested_set,sximba/rational_nested_set,petergoldstein/awesome_nested_set,markmercedes/awesome_nested_set,rodolfospalenza/nested_set,sximba/rational_nested_set,rbo7nik/awesome_nested_set,skyeagle/nested_set,tcjuan/awesome_nested_set,galetahub/awesome_nested_set,oesgalha/awesome_nested_set