Squashed commit of the following:

commit 62ff3b3
Author: Greg Chapman <[email protected]>
Date:   Tue Jan 17 16:35:21 2023 -0800

    Update in preparation for 2.0 release.

commit a241a7b
Author: Greg Chapman <[email protected]>
Date:   Tue Jan 17 14:46:46 2023 -0800

    Move converter21 registration from __main__.py to __init__.py so that callers of the diff() API will get that automatically as well.

commit 096ae8f
Author: Greg Chapman <[email protected]>
Date:   Tue Jan 17 13:20:11 2023 -0800

    Don't be so noisy about unhandled extras.

commit a40c89b
Author: Greg Chapman <[email protected]>
Date:   Tue Jan 17 12:55:27 2023 -0800

    Use new converter21.register() API to register Humdrum and MEI converters.

musicdiff/__init__.py

@@ -18,6 +18,7 @@
 from pathlib import Path
 
 import music21 as m21
+import converter21
 
 from musicdiff.m21utils import M21Utils
 from musicdiff.m21utils import DetailLevel
@@ -81,6 +82,10 @@ def diff(score1: Union[str, Path, m21.stream.Score],
     Returns:
         int: The number of differences found (0 means the scores were identical, None means the diff failed)
     '''
+    # Use the new Humdrum/MEI importers from converter21 in place of the ones in music21...
+    # Comment out this line to go back to music21's built-in Humdrum/MEI importers.
+    converter21.register()
+
     badArg1: bool = False
     badArg2: bool = False
 

musicdiff/__main__.py

@@ -15,9 +15,6 @@
 import sys
 import argparse
 
-import music21 as m21
-from converter21 import HumdrumConverter
-
 from musicdiff import diff
 from musicdiff import DetailLevel
 
@@ -28,11 +25,6 @@
 '''
 if __name__ == "__main__":
 
-    # Use the new Humdrum importer from converter21 in place of the one in music21...
-    # Comment out these two lines to go back to music21's built-in Humdrum importer.
-    m21.converter.unregisterSubconverter(m21.converter.subConverters.ConverterHumdrum)
-    m21.converter.registerSubconverter(HumdrumConverter)
-
     parser = argparse.ArgumentParser(
                 prog='python3 -m musicdiff',
                 description='Music score notation diff (MusicXML, MEI, Humdrum, etc)')

musicdiff/m21utils.py

@@ -771,7 +771,7 @@ def extra_to_string(extra: m21.base.Music21Object) -> str:
             if isinstance(extra, (m21.expressions.ArpeggioMark, m21.expressions.ArpeggioMarkSpanner)):
                 return M21Utils.arpeggiomark_to_string(extra)
 
-        print(f'Unexpected extra: {extra.classes[0]}', file=sys.stderr)
+        # print(f'Unexpected extra: {extra.classes[0]}', file=sys.stderr)
         return ''
 
     @staticmethod

pypi_README.md

@@ -45,7 +45,7 @@ Many thanks to [Francesco Foscarin](https://github.com/fosfrancesco) for allowin
 
 ## License
 The MIT License (MIT)
-Copyright (c) 2022, Francesco Foscarin, Greg Chapman
+Copyright (c) 2023, Francesco Foscarin, Greg Chapman
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

setup.py

@@ -13,7 +13,7 @@
 from setuptools import setup, find_packages
 import pathlib
 
-musicdiffversion = '1.4.0'
+musicdiffversion = '2.0.0'
 
 here = pathlib.Path(__file__).parent.resolve()
 
@@ -56,12 +56,12 @@
 
         packages=find_packages(),
 
-        python_requires='>=3.7',
+        python_requires='>=3.9',
 
         install_requires=[
-            'music21>=7.2',
+            'music21>=8.2',
             'numpy',
-            'converter21>=1.2'
+            'converter21>=2.0'
         ],
 
         project_urls={