patch::: 1.3.57.jcn2

patch::: 1.3.57.jcn2

1.3.57.jcn2
===========

* Cleaned-up scheme list to text conversion for Chord_name and
fixed horizontal kerning.

* Added examples for american (slashed o) and jazz (black triangle),
  see input/test/{american-chords.ly,jazz-chords.ly}