init
Add UIBarButtonItem subclass for pop and dismiss modal
Add UIButton subclass for pop and dismiss modal
Rename RFPopButton to RFSeguePopButton.
Unify header.
Add RFSegueDismissModalButton.
New RFSegueDelegate, move button subclasses to a folder.
RFSegue 1.1.0, delegate add RFSegueShouldReturn:, add document.
Fix warnings.
Remove init method.
New RFNavigationPushAsRootSegue.
Minor refactoring.
v2.0. Rewrite confused segue delegate. Not compatible with previous versions.
Add shouldPerform method to integrate logical judgment.
New RFContainedSegue to add another view controller´s view to current view controller´s special view.
RFContainedSegue, fix destination view controller´s view may not fill containedViewHolder.
Fix warnings: -Warc-repeated-use-of-weak, -Wobjc-missing-property-synthesis.
RFContainedSegue, fix add view again and again, missing containedViewController set.
Refactoring RFContainedSegue, call willMoveToParentViewController: and didMoveToParentViewController: methods to signal that the operation is complete.
Test, declare a protocol using property.