SVN and WordPress.org Plugin Deployment — a practical guide to WordPress.org SVN deploy with clear examples you can reuse in real projects.
WordPress Plugin Development Series (90/95). Prefer one article? Read the complete WordPress plugin development tutorial.
Short description
Develop in Git if you want, then deploy to wordpress.org SVN (`trunk` + `tags/x.y.z`).
SVN release flow
1. svn co plugin repo
2. update trunk
3. svn cp trunk tags/1.0.1
4. svn ci -m "Release 1.0.1"