musescore/MuseScore — pull request #579 by MarcSabatella (2013-12-04 03:15:08+00:00)
Title: fix #23783: chord symbol text style properties

Adds support for X, Y, horizontal alignment, and vertical alignment.
Improves compatibility for 1.3 scores, which relies on text style Y to
set chord height, also allows for chord symbols centered over notes (see
#10355).