Drop support for Python 3.7

It reached end-of-life: <https://peps.python.org/pep-0537/>.

.github/workflows/test-from-sources.yml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       max-parallel: 10
       matrix:
-        python-version: ['3.11', '3.10', '3.9', '3.8', '3.7']
+        python-version: ['3.11', '3.10', '3.9', '3.8']
         os: [ubuntu-latest, macos-latest, windows-latest]
         exclude:
           # mac os: exclude all but the last two python releases
@@ -22,15 +22,11 @@ jobs:
             python-version: 3.9
           - os: macos-latest
             python-version: 3.8
-          - os: macos-latest
-            python-version: 3.7
           # windows: exclude all but the last two python releases
           - os: windows-latest
             python-version: 3.9
           - os: windows-latest
             python-version: 3.8
-          - os: windows-latest
-            python-version: 3.7
 
     steps:
 

README.md

@@ -225,7 +225,7 @@ On FreeBSD and DragonFly BSD, liquidctl is maintained in the Ports Collections,
 and is available as a pre-built binary package.
 
 ```
-pkg install py37-liquidctl
+pkg install py39-liquidctl
 ```
 
 ### Manual installation
@@ -249,7 +249,7 @@ libraries already provided by the operating system.
 On Linux, the following dependencies are required at runtime (common package
 names are listed in parenthesis):
 
-- Python 3.7 or later _(python3, python)_
+- Python 3.8 or later _(python3, python)_
 - pkg\_resources Python package _(python3-setuptools, python3-pkg-resources, python-setuptools)_
 - PyUSB _(python3-pyusb, python3-usb, python-pyusb)_
 - colorlog _(python3-colorlog, python-colorlog)_
@@ -270,7 +270,7 @@ needed:
 #### macOS system-level dependencies
 [macOS system dependencies]: #macos-system-level-dependencies
 
-On macOS, Python (3.7 or later) and LibUSB 1.0 must be installed beforehand.
+On macOS, Python (3.8 or later) and LibUSB 1.0 must be installed beforehand.
 
 ```
 brew install python libusb
@@ -279,7 +279,7 @@ brew install python libusb
 #### Windows system-level dependencies
 [Windows system dependencies]: #windows-system-level-dependencies
 
-On Windows, Python (3.7 or later) must be installed beforehand, which can be
+On Windows, Python (3.8 or later) must be installed beforehand, which can be
 done from the [official website][python.org].  It is recommended to select the
 option to add `python` and other tools to the `PATH`.
 

pyproject.toml

@@ -16,7 +16,7 @@ addopts = "--doctest-modules -ra"
 
 [tool.black]
 line-length = 100
-target-version = ["py37"]
+target-version = ["py38"]
 extend-exclude = '''
   /*
     To have all items start with |, this isn't a real comment; still, it

setup.cfg

@@ -45,7 +45,7 @@ project_urls =
 
 [options]
 packages = find:
-pythons_requires = >=3.7
+pythons_requires = >=3.8
 setup_requires = setuptools_scm
 install_requires =
   colorlog

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py37, py38, py39, py310, py311
+envlist = py38, py39, py310, py311
 isolated_build = True
 skip_missing_interpreters = true