New features and improvements

Added EventCallback property to DevicesConnector.
Added CutPart method to MidiFileSplitter.
Improved performance of GetNotes, ProcessNotes and RemoveNotes methods of NotesManagingUtilities.
Improved GetChords, ProcessChords and RemoveChords methods of ChordsManagingUtilities.
Improved performance of ticks to metric timespan conversion (#129).
Added DeviceErrorOccurred event to Playback (#121).
Replaced MidiClockSettings parameter by PlaybackSettings in all playback creation methods and put MidiClockSettings inside PlaybackSettings.
Removed Playback constructors by MidiEvents, added GetPlayback utility methods for MidiEvents to (with output device parameter and without it).
Tracked data will be now sent by Playback when value of TrackControlValue, TrackPitchValue or TrackProgram changed to true.
Added IMetadata interface.
Added TryPlayEvent and GetTimedEvents protected virtual method to Playback (please see Custom playback article).
Added EndOfTrackStoringPolicy to ReadingSettings (#17).
Added Metadata property to MidiEventPlayedEventArgs (please see Custom playback article).

Small changes and bug fixes

Made TickGenerator.TickGenerated event public.
Made EndOfTrackEvent class public (#17).
Removed sealed modifier from Playback.
Removed sealed modifier from TimedEvent, Note and Chord classes, made their Clone methods virtual.
Fixed: Concurrent access to Octave and Note caches is failed (#116).
Fixed: NoteSearchContext and ChordSearchContext are not respected in GetObjects methods for track chunks collection and for MIDI file.
Fixed: Tracked data is sent by Playback when we jump to data change event.