Merge branch 'master' into lilypond/translation

Merge branch 'master' into lilypond/translation

* master:
  Typo: remove duplicate line
  LSR: update.
  Update from Ralph.
  Improve headword formatting.
  Improve formatting of headwords.
  Add length-fraction to the stem-tremolo-interface.
  Document the list of available values for style in the rest-interface.
  Update from Till.
  Update from Jay.
  Added xelatex template from Till.
  Update from Kurt.
  Small fixes.
  Update from Till.
  Update from Jay.
  Update from Trevor.
  If page-count is set, don't try spacing on fewer pages than specified.