Drop support for EOL Python 3.6-3.7

.github/workflows/tests.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, macos-latest, ubuntu-latest]
-        python: ['pypy-3.9', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
+        python: ['pypy-3.9', '3.8', '3.9', '3.10', '3.11', '3.12']
         exclude:
           # pypy3 currently fails to run on Windows
           - os: windows-latest

pyproject.toml

@@ -12,7 +12,7 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
 ]
-requires-python = ">=3.6"
+requires-python = ">=3.8"
 dependencies = [
     "bidict >= 0.21.0",
     "python-engineio >= 4.8.0",

tox.ini

@@ -1,10 +1,9 @@
 [tox]
-envlist=flake8,py{37,38,39,310,311,312,py3},docs
+envlist=flake8,py{38,39,310,311,312,py3},docs
 skip_missing_interpreters=True
 
 [gh-actions]
 python =
-    3.7: py37
     3.8: py38
     3.9: py39
     3.10: py310