Three new microtonal snippets in the LSR

[Keith OHara]

These snippets are for people who do not want to program.
They are not yet checked-in and searchable, but you can see them through the 
links in this message.

Arrow notation and transposition for quarter tones
 <http://lsr.dsi.unimi.it/LSR/Item?id=784>
shows a simple way to keep natural-up-arrow distinct from sharp-down-arrow 
whenever possible, but substitute an enharmonic equivalent if needed, in cases 
that come up in common transpositions.  (It does not try to handle uncommon 
transpositions such as from c to ceh.)  I wish I had a more realistic example, 
that still demonstrates the issues that can arise in transpositions.

Custom tuning and MIDI
 <http://lsr.dsi.unimi.it/LSR/Item?id=785>
is similar to Graham's snippet on regular temperaments, but this uses less 
Scheme and more harmony.  One line of the snippet must be changed depending on 
LilyPond version (2.12 or 2.14).  If anybody knows a simple way to make it work 
under both...

Finally, to demonstrate the combination of customized alterations with 
customized tuning, in sophisticated microtonal music, we turn to Bach
 <http://lsr.dsi.unimi.it/LSR/Item?id=786>