Officially supporting Python 3.12 (#26)

* Added 3.12 to build matrix

* Added Python 3.12 to README, with badge

* Added 3.12 classifier with python_requires for 3.7

.github/workflows/job.test.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
         os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
     - uses: actions/checkout@v3

README.md

@@ -1,21 +1,21 @@
 # easy-entrez
 
-![tests](https://github.com/krassowski/easy-entrez/workflows/tests/badge.svg)
+![Tests](https://github.com/krassowski/easy-entrez/workflows/tests/badge.svg)
 ![CodeQL](https://github.com/krassowski/easy-entrez/workflows/CodeQL/badge.svg)
 [![Documentation Status](https://readthedocs.org/projects/easy-entrez/badge/?version=latest)](https://easy-entrez.readthedocs.io/en/latest/?badge=latest)
 [![DOI](https://zenodo.org/badge/272182307.svg)](https://zenodo.org/badge/latestdoi/272182307)
+![Python](https://img.shields.io/badge/python-3.7%20%7C%203.8%20%7C%203.9%20%7C%203.10%20%7C%203.11%20%7C%203.12-blue)
 
 Python REST API for Entrez E-Utilities, aiming to  be easy to use and reliable.
 
 Easy-entrez:
 
 - makes common tasks easy thanks to simple Pythonic API,
 - is typed and integrates well with mypy,
-- is tested on Windows, Mac and Linux across Python 3.7, 3.8, 3.9, 3.10 and 3.11
+- is tested on Windows, Mac and Linux across Python 3.7 to 3.12,
 - is limited in scope, allowing to focus on the reliability of the core code,
 - does not use the stateful API as it is [error-prone](https://gitlab.com/ncbipy/entrezpy/-/issues/7) as seen on example of the alternative *entrezpy*.
 
-
 ### Examples
 
 ```python

setup.py

@@ -40,8 +40,10 @@ def get_long_description(file_name):
             'Programming Language :: Python :: 3.8',
             'Programming Language :: Python :: 3.9',
             'Programming Language :: Python :: 3.10',
-            'Programming Language :: Python :: 3.11'
+            'Programming Language :: Python :: 3.11',
+            'Programming Language :: Python :: 3.12'
         ],
+        python_requires=">=3.7",
         install_requires=['requests', 'typing_extensions'],
         extras_require={
             'with_progress_bars': ['tqdm'],