Ease up on music21 dependency: v8.1 is fine.

Author: gregchapman-dev

README.md

@@ -7,7 +7,7 @@ musicdiff is derived from: [music-score-diff](https://github.com/fosfrancesco/mu
     by [Francesco Foscarin](https://github.com/fosfrancesco).
 
 ## Setup
-Depends on [music21](https://pypi.org/project/music21) (version 8.2+),  [numpy](https://pypi.org/project/numpy), and [converter21](https://pypi.org/project/converter21) (version 2.0+). You also will need to configure music21 (instructions [here](https://web.mit.edu/music21/doc/usersGuide/usersGuide_01_installing.html)) to display a musical score (e.g. with MuseScore).
+Depends on [music21](https://pypi.org/project/music21) (version 8.1+),  [numpy](https://pypi.org/project/numpy), and [converter21](https://pypi.org/project/converter21) (version 2.0+). You also will need to configure music21 (instructions [here](https://web.mit.edu/music21/doc/usersGuide/usersGuide_01_installing.html)) to display a musical score (e.g. with MuseScore).
 
 ## Usage
 On the command line:

pypi_README.md

@@ -7,7 +7,7 @@ musicdiff is derived from: [music-score-diff](https://github.com/fosfrancesco/mu
     by [Francesco Foscarin](https://github.com/fosfrancesco).
 
 ## Setup
-Depends on [music21](https://pypi.org/project/music21) (version 8.2+),  [numpy](https://pypi.org/project/numpy), and [converter21](https://pypi.org/project/converter21) (version 2.0+). You also will need to configure music21 (instructions [here](https://web.mit.edu/music21/doc/usersGuide/usersGuide_01_installing.html)) to display a musical score (e.g. with MuseScore).
+Depends on [music21](https://pypi.org/project/music21) (version 8.1+),  [numpy](https://pypi.org/project/numpy), and [converter21](https://pypi.org/project/converter21) (version 2.0+). You also will need to configure music21 (instructions [here](https://web.mit.edu/music21/doc/usersGuide/usersGuide_01_installing.html)) to display a musical score (e.g. with MuseScore).
 
 ## Usage
 On the command line:

setup.py

@@ -13,7 +13,7 @@
 from setuptools import setup, find_packages
 import pathlib
 
-musicdiffversion = '2.0.0'
+musicdiffversion = '2.0.1'
 
 here = pathlib.Path(__file__).parent.resolve()
 
@@ -59,7 +59,7 @@
         python_requires='>=3.9',
 
         install_requires=[
-            'music21>=8.2',
+            'music21>=8.1',
             'numpy',
             'converter21>=2.0'
         ],