Remove support for py37

.github/workflows/python-tests.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.8, 3.9, "3.10"]
 
     steps:
     - uses: actions/checkout@v2

docs/changelog.rst

@@ -7,7 +7,7 @@ Version 2.3.dev
 
 Not released yet.
 
-Sigal now requires Python 3.7+.
+Sigal now requires Python 3.8+.
 
 - Add option ``max_img_pixels`` to allow processing huge images (sets
   ``PIL.Image.MAX_IMAGE_PIXELS``) [:issue:`431`].

setup.cfg

@@ -15,7 +15,6 @@ classifiers =
     License :: OSI Approved :: MIT License
     Operating System :: OS Independent
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
@@ -27,7 +26,7 @@ classifiers =
 zip_safe = False
 include_package_data = True
 packages = find:
-python_requires = >=3.7
+python_requires = >=3.8
 install_requires =
     blinker
     click

tox.ini

@@ -5,16 +5,15 @@ isolated_build = true
 
 [gh-actions]
 python =
-    3.7: py37-pillow71
-    3.8: py38-pillow-latest, check
-    3.9: py39-pillow-latest
+    3.8: py38-pillow71, check
+    3.9: py39-pillow80
     3.10: py310-pillow-latest
     pypy3: pypy3
 
 [testenv]
 deps =
-    pillow70: Pillow==7.0.0
     pillow71: Pillow==7.1.0
+    pillow80: Pillow==8.0.0
 extras =
     all
     tests