2.13.55 regtests

[Phil Holmes]

I've checked the regtests with both my pixel comparator and the standard 
checker.  Generally no problems - changes to beam feathering, stem lengths 
and lyric alignment with melisma are all, I believe, expected 
enhancements/bug fixes.

I am concerned about one feature.  The footnote regtest logfiles have 
multiple lines saying:

warning: type check for `spanner-placement' failed; value `LEFT' must be of 
type `direction'

Could someone look into this, please? (Mike?)

--
Phil Holmes
Bug Squad