Adding contribute documentation

docs/source/contribute.rst

@@ -0,0 +1,36 @@
+==========
+Contribute
+==========
+
+Contributions to this open-source project are strongly encouraged.
+If you would like to contribute to the project, please fork the repository and submit a pull request.
+A few guidelines to keep in mind:
+
+*   Please make sure that your code is well-documented by adding comprehensive docstrings.
+    Indicate the purpose of the function, the input parameters, and the expected output.
+
+*   Please add unit tests to the ``tests`` directory (in existing or new files)
+    to ensure that the code is functioning as expected.
+    Run the tests using the command ``pytest`` in the root directory of the project
+    (we refer to the [pytest documentation](https://docs.pytest.org) for more information,
+    e.g. about verbose output).
+
+    If you need to install:
+    ```bash
+    python -m pip install pytest
+    ```
+
+*   Respect the coding conventions by running the linters
+    (i.e. you don't have to worry during coding, formatting is automatically applied by the linters).
+    Run:
+    ```bash
+    pre-commit run --all-files
+    ```
+
+    If you need to install:
+    ```bash
+    python -m pip install pre-commit
+    ```
+    (and if you don't want to, you can either run the linters manually,
+    with settings in ``.pre-commit-config.yaml``,
+    or apply modifications based on the CI output),

docs/source/customize.rst

@@ -195,6 +195,7 @@ If you want to change these defaults, specify them in the call to the super cons
 
 Community-Provided Middleware
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
 We encourage users to provide their own middleware layers and share them with the community.
 We are happy to provide a list of community-provided middleware layers here, so please let us know if you have written one!
 

docs/source/index.rst

@@ -25,6 +25,7 @@ Contents:
     install.rst
     quickstart.rst
     customize.rst
+    contribute.rst
     migrate.rst
     biber.rst
     bibtexparser.rst

docs/source/install.rst

@@ -2,7 +2,6 @@
 Installation
 ============
 
-
 Requirements
 ------------