Chord track or something similar wanted

[zzzyyf]

I like this software very much, especially its simple UI. But it seems doesn't have a chord track or something similar. Having a chord track can help me grasp the composition quickly by the harmony structures and chord progressions. I hope there's a chord track that have these features:

1. display chords in chord symbols (e.g. C7) and/or Roman numerics (e.g. V7)
2. chords can be detected from selected track(s) (thus can be refactored), and can be modified or added manually from scratch.