Fix compatibility issue with Python 3.9; bump version to 0.2.1

Author: wgantt

docs/source/conf.py

@@ -22,7 +22,7 @@
 author = 'Aaron Steven White'
 
 # The full version, including alpha/beta/rc tags
-release = '0.2.0'
+release = '0.2.1'
 
 # Changes root document from contents.rst to index.rst
 master_doc = 'index'

requirements.txt

@@ -1,9 +1,9 @@
 requests==2.22.0
-networkx==2.2
+networkx>=2.5.1
 memoized_property==1.0.3
 typing==3.6.2
 rdflib==4.2.2
-setuptools==41.0.1
+setuptools>=52.0.0
 numpy>=1.16.4
 pyparsing==2.2.0
 overrides==3.1.0

setup.py

@@ -1,7 +1,7 @@
 from setuptools import find_packages, setup
 
 setup(name='decomp',
-      version='0.2.0',
+      version='0.2.1',
       description='Toolkit for working with Universal\
                    Decompositional Semantics graphs',
       url='https://decomp.io/',
@@ -12,12 +12,12 @@
       package_dir={'decomp': 'decomp'},
       package_data={'decomp': ['data/*']},
       install_requires=['requests==2.22.0',
-                        'networkx==2.2',
+                        'networkx>=2.5.1',
                         'memoized_property==1.0.3',
                         'overrides==3.1.0',
                         'typing==3.6.2',
                         'rdflib==4.2.2',
-                        'setuptools==41.0.1',
+                        'setuptools>=52.0.0',
                         'numpy>=1.16.4',
                         'pyparsing==2.2.0',
                         'predpatt @ http://github.com/hltcoe/PredPatt/tarball/master#egg=predpatt'],