ReleaseNotes_4.0.0.txt

Changes since 3.5.0:
    Add import/export of ABC files.
    All: Add support for import/export of multi-score files <-> music21 Opus
        Note: MEI supports three different ways to store multiple scores in an
        MEI file: multiple <mei> elements (in <meiCorpus>), multiple <mdiv> 
        elements, and multiple <music> elements.  We can read/write all three.  
        By default we write multiple <mdiv> elements, but you can ask for the
        other choices, by specifying multipleScoresHostTag='music' or 'mei' on
        the write() call.  
        Note: music21's myOpus.write() will generally write multiple files, so
        if you want a multi-score output file, call music21.stream.write(myOpus)
        instead.
    All import/export: Add support for PedalMarks.
    Humdrum/MEI import/export: Support styled lyrics
    Humdrum/MEI import/export: Better color support (notes, lyrics, etc)
    Humdrum import: stem direction fixes