Merge branch '658-GetFixVersions' of https://github.com/davedevretro/jira-plugin into 658-GetFixVersions

Author: davedevretro

.mvn/maven.config

@@ -1,2 +1,3 @@
 -Pconsume-incrementals
 -Pmight-produce-incrementals
+-Dchangelist.format=%d.v%s

.pre-commit-config.yaml

@@ -0,0 +1,13 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.6.0
+    hooks:
+      - id: check-yaml
+      - id: check-added-large-files
+  - repo: https://github.com/ORCID/pre-commit-spotless
+    rev: v1.0.0
+    hooks:
+      - id: spotless-check
+        types_or: [java]
+      - id: spotless-apply
+        types_or: [java]

CONTRIBUTING.md

@@ -1,6 +1,24 @@
-# Notes for maintainers
+# Contribution guidelines
 
-## Local testing
+General rules:
+
+- check the [general Jenkins development guide](https://www.jenkins.io/doc/developer/book/)
+- make sure to provide tests
+- mark the Pull Request as _draft_ initially, to make sure all the checks pass correctly, then convert it to non-draft.
+
+## Setting up your environment
+
+### Install pre-commit hooks
+
+The [pre-commit](https://pre-commit.com/#install) hooks run various checks to make sure no unwanted files are committed and that the submitted change follows the code style and formatting rules:
+
+```sh
+brew install pre-commit && pre-commit install --install-hooks
+```
+
+## Notes for maintainers
+
+### Local testing
 
 Use [docker-compose](./docker-compose.yml) to run a local Jenkins instance with the plugin installed. The configuration includes local volumes for both: Jenkins and ssh-agent, so you can easily test the plugin in a clean environment.
 
@@ -20,4 +38,4 @@ There is a [Jira Cloud](https://jenkins-jira-plugin.atlassian.net/) test instanc
 
 ### Releasing the plugin
 
-Make sure you have your `~/.m2/settings.xml` configured accordingly - refer to [releasing Jenkins plugins](https://www.jenkins.io/doc/developer/publishing/releasing/).
+Make sure you have your `~/.m2/settings.xml` configured accordingly - refer to [releasing Jenkins plugins](https://www.jenkins.io/doc/developer/publishing/releasing/).