Drop 3.8 (#778)

* Drop Python 3.8

* Update pyproject.toml

* Update README.rst

README.rst

@@ -26,7 +26,7 @@ into something that you wish fontParts did/didn't do.
 Installation
 ~~~~~~~~~~~~
 
-FontParts requires `Python <http://www.python.org/download/>`__ 3.8 or later.
+FontParts requires `Python <http://www.python.org/download/>`__ 3.9 or later.
 
 The package is listed in the Python Package Index (PyPI), so you can
 install it with `pip <https://pip.pypa.io>`__:
@@ -123,7 +123,7 @@ or the ``TOXENV`` environment variable:
    :target: https://github.com/robotools/fontParts/actions?query=workflow%3ATests
 .. |PyPI| image:: https://img.shields.io/pypi/v/fontParts.svg
    :target: https://pypi.org/project/fontParts
-.. |Versions| image:: https://img.shields.io/badge/python-3.8%2C%203.9%2C%203.10%2C%203.11-blue.svg
+.. |Versions| image:: https://img.shields.io/badge/python-3.9%2C%203.10%2C%203.11%2C%203.12%2C%203.13-blue.svg
    :alt: Python Versions
 .. |Coverage| image:: https://codecov.io/gh/robotools/fontParts/branch/master/graph/badge.svg
    :target: https://codecov.io/gh/robotools/fontParts

pyproject.toml

@@ -6,7 +6,7 @@ write_to = 'Lib/fontParts/_version.py'
 write_to_template = '__version__ = "{version}"'
 
 [tool.ruff]
-target-version = "py38"
+target-version = "py39"
 
 [tool.ruff.format]
 # Enable reformatting of code snippets in docstrings.

setup.py

@@ -46,7 +46,7 @@
         "Topic :: Multimedia :: Graphics :: Graphics Conversion",
         "Topic :: Software Development :: Libraries",
     ],
-    python_requires=">=3.8",
+    python_requires=">=3.9",
     zip_safe=True,
 )