docs: prepare for 1.9.0

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

CHANGELOG.rst

@@ -1,11 +1,20 @@
+1.9.0
+-----
+
+* Drop Python <3.8 (`#683 <https://github.com/tomerfiliba/plumbum/pull/683>`_)
+* Add 3.13 testing and classifiers (`#690 <https://github.com/tomerfiliba/plumbum/pull/690>`_)
+* setuptools-less installs couldn't translate, add test (`#373 <https://github.com/tomerfiliba/plumbum/pull/373>`_)
+* Use importlib resources (`#680 <https://github.com/tomerfiliba/plumbum/pull/680>`_)
+* Replaced ``NotImplementedError`` by ``NotImplemented`` (`#667 <https://github.com/tomerfiliba/plumbum/pull/667>`_)
+
 1.8.3
 -----
 
-* Fix StdinDataRedirection's formulate() method by @nebbish in https://github.com/tomerfiliba/plumbum/pull/629
-* Missing non-zero return code from TEE'd pipe by @vient in https://github.com/tomerfiliba/plumbum/pull/661
-* Fix stalling in Pipeline command by @astaric in https://github.com/tomerfiliba/plumbum/pull/632
-* Use high-speed method for C locale too by @henryiii in https://github.com/tomerfiliba/plumbum/pull/681
-* Update index.rst - fix broken link for sh project by @mcint in https://github.com/tomerfiliba/plumbum/pull/658
+* Fix StdinDataRedirection's formulate() method (`#629 <https://github.com/tomerfiliba/plumbum/pull/629>`_)
+* Missing non-zero return code from TEE'd pipe (`661 <https://github.com/tomerfiliba/plumbum/pull/661>`_)
+* Fix stalling in Pipeline command (`#632 <https://github.com/tomerfiliba/plumbum/pull/632>`_)
+* Use high-speed method for C locale too (`#691 <https://github.com/tomerfiliba/plumbum/pull/681>`_)
+* Update index.rst - fix broken link for sh project (`#658 <https://github.com/tomerfiliba/plumbum/pull/658>`_)
 
 1.8.2
 -----

docs/_news.rst

@@ -1,3 +1,5 @@
+* **2023.10.05**: Version 1.9.0 released with Python 3.8-3.13 support, and some small fixes.
+
 * **2024.04.29**: Version 1.8.3 released with some small fixes, final version to support Python 3.6 and 3.7.
 
 * **2023.05.30**: Version 1.8.2 released with a PyPI metadata fix, Python 3.12b1 testing, and a bit more typing.