Drop support for Python 3.8 and Python 3.9 (#11)

Makes way for the `match` statement

.github/workflows/python.yml

@@ -6,7 +6,7 @@ jobs:
   tox:
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.10', '3.11']
         os: [ubuntu-22.04, macos-12]
     runs-on: ${{ matrix.os }}
     steps:

setup.py

@@ -71,11 +71,10 @@ def finalize_options(self):
         'Topic :: Software Development :: Libraries',
         'License :: OSI Approved :: MIT License',
         'Operating System :: POSIX :: Linux',
+        'Operating System :: MacOS',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3 :: Only',
-        'Programming Language :: Python :: 3.8',
-        'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
     ],

tests/test_compile.py

@@ -3,7 +3,7 @@
 from cffi import FFI
 
 from tensora import Tensor
-from tensora.compile import tensor_cdefs, taco_define_header, taco_type_header, lock,\
+from tensora.compile import tensor_cdefs, taco_define_header, taco_type_header, lock, \
     take_ownership_of_tensor_members, take_ownership_of_tensor
 
 source = """

tox.ini

@@ -1,8 +1,6 @@
 [gh-actions]
 python =
-    3.8: py38, numpy, coverage, pep8
-    3.9: py39
-    3.10: py310
+    3.10: py310, numpy, coverage, pep8
     3.11: py311
 
 [tox]
@@ -13,8 +11,6 @@ requires =
 
 # Environment changes have to be manually synced with `.github/workflows/python.yml`.
 envlist =
-    py38
-    py39
     py310
     py311
     numpy
@@ -37,7 +33,7 @@ commands =
         -m pytest tests --cov "{envsitepackagesdir}/tensora"
 
 [testenv:numpy]
-basepython = python3.8
+basepython = python3.10
 setenv =
     COVERAGE_FILE = .coverage.numpy
 extras =
@@ -49,7 +45,7 @@ commands =
 [testenv:coverage]
 # Separate step for combining coverage
 skip_install = true
-depends = py38
+depends = py310, py311, numpy
 setenv =
 deps =
     coverage >= 4.5.3