Update README and remove badges without cache invalidation

README.md

@@ -1,18 +1,14 @@
 # xdg-base-dirs
 
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-
 `xdg-base-dirs` is a Python module that provides functions to return paths to
 the directories defined by the [XDG Base Directory Specification][spec], to save
 you from duplicating the same snippet of logic in every Python utility you write
 that deals with user cache, configuration, or data files. It has no external
 dependencies.
 
+`xdg-base-dirs` currently implements version 0.8 of the specification, released
+on 8th May 2021.
+
 > [!NOTE]
 >
 > `xdg-base-dirs` was previously named `xdg`, and was renamed due to an import
@@ -22,20 +18,15 @@ dependencies.
 
 ## Installation
 
-To install the latest release from [PyPI], use [pip]:
+To install the latest release from [PyPI] with [pip], use:
 
 ```bash
 python3 -m pip install xdg-base-dirs
 ```
 
-The latest release of `xdg-base-dirs` currently implements version 0.8 of the
-specification, released on 8th May 2021.
-
-In Python projects using [Poetry] or [PDM] for dependency management, add
-`xdg-base-dirs` as a dependency with `poetry add xdg-base-dirs` or
-`pdm add xdg-base-dirs`. Alternatively, since `xdg-base-dirs` is only a single
-file you may prefer to just copy `src/xdg_base_dirs/__init__.py` from the source
-distribution into your project.
+Alternatively, since `xdg-base-dirs` is only a single file you may prefer to
+just copy `src/xdg_base_dirs/__init__.py` from the source distribution into your
+project.
 
 ## Usage
 
@@ -70,16 +61,13 @@ not set, or contains a relative path rather than an absolute path.
 
 ## Copyright
 
-Copyright © [Scott Stevenson].
+Copyright © Scott Stevenson.
 
 `xdg-base-dirs` is distributed under the terms of the [ISC license].
 
 [isc license]: https://opensource.org/licenses/ISC
 [path]: https://docs.python.org/3/library/pathlib.html#pathlib.Path
-[pdm]: https://pdm.fming.dev/
 [pip]: https://pip.pypa.io/en/stable/
-[poetry]: https://python-poetry.org/
 [pypi]: https://pypi.org/project/xdg-base-dirs/
-[scott stevenson]: https://scott.stevenson.io
 [spec]:
   https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html