[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

setup.cfg

@@ -7,7 +7,7 @@ url = https://github.com/ianhi/mda-simulator
 author = Ian Hunt-Isaak, John Russell
 author_email = [email protected]
 license = BSD-3-Clause
-license_file = LICENSE
+license_files = LICENSE
 classifiers =
     Development Status :: 2 - Pre-Alpha
     License :: OSI Approved :: BSD License
@@ -23,7 +23,7 @@ packages = find:
 install_requires =
     numpy
     scikit-image
-python_requires = >=3.7
+python_requires = >=3.8
 zip_safe = False
 
 [options.extras_require]