Added PowerPraise Song model classes
Added readers for native PowerPraise files, renamed old reader classes
SongWriter and SongReader are now interfaces
Renamed variables and added doc comments
Added missing save statement
Use other filename for extended song writer
Renamed namespace to PraiseBase.Presenter
Moved XmlWriterHelper class
Renamed namespaces / moved classes
Split CCLI file reader into reader and Song mapper
Split OpenLyrics file reader into reader and Song mapper
Initialize PartSequence in song
Added comment
Use CollectionAssert for background images test
Added PraiseBaseSongFileMapper
Added SongFileMapper interface
Use standardized song objects for testing
Added ExtendedPowerPraiseSong
Added hook for parsing additional fields
Added new song file reader and writer interfaces