guillemets
drop option --one-clef

don't do with dirty hack what can be done in a pure lilypond stylesheet
'split_scores' yields each score before output to allow final modification
only antiphons and responsories have the first line indented
mark ends of psalm strophes in a convenient way

convenient in this project; copied from the Czech edition of LH
define the strophe end mark command used by typographus
yaml format to describe psalm tones without unnecessary repetition and tool to compile it to lilypond
produced scores have mode information and id in header
fix error in score id composition; add some important sugar to the output
melismas, h/b -> b/bes
handle melisma with accent
octave according to mode (dirty)
interval in peregrinus fixed