Updates:
- Error First Callbacks PR #658
- Claims Request Support PR #664
- loginInProgress() as a public function #671
- 'state' moved from config to request, returning the user state if passed stripping the GUID #674 #679 #681
- cache cleanup of all values (keys cleanup will be done in next release) #675
- made loading iFrame timeout in silent calls configurable, 'navigateFrameWait' #676
- readme updated with latest code patterns #672