0.9.0

• Added segmentedCollectionView(_:willDisplayHeader:) to SegmentedCollectionViewDelegate
• Improved documentation of SegmentedCollectionViewDelegate
• Added FlaneurSearchViewController and the associated demo
• Added KeyboardObserver to delegate keyboard notification observations
• Added initials extension to String
• Started ignoring Pods in repository (because GoogleMaps is unmanageable and diffs were getting too hard to read)
• FlaneurMapView updates:
  • Updated the FlaneurMapView demo to make it simpler
  • Made code simpler and improved documentation
• Added some sample code for screenshot testing