Name notes

Write note names in SPN below each note/chord.

One version of the plugin writes them as lyrics, with the lyrics verse number corresponding to the voice number of the note; the other version writes it as staff text, but autoplace makes that tricky, so prefer the lyrics version if you can.

Implemented by request from Mmike (Mario Splivalo) in IRC.

Issue Tracker

API compatibility
Plugin categories
Notes & Rests
Simplified notation