REL: Release v0.1.2

For #43 (closed)

RELEASE_GUIDELINES.md

@@ -25,8 +25,13 @@ guidelines of the CaosDB Project
 
 5. Merge the release branch into the main branch.
 
-6. Tag the latest commit of the main branch with `v<VERSION>`.
+6. Tag the latest commit of the main branch with `v<VERSION>`. Push the tag and the main branch.
 
-7. Delete the release branch.
+7. Create release in Gitlab:
+   1. On [Releases](https://gitlab.indiscale.com/caosdb/src/caosdb-cpplib/-/releases), click "New release"
+   2. Choose tag, type release title (same as tag), no milestone, possibly short release note, no
+      manual assets are necessary, possibly link to documentation.
 
-8. TODO...
+8. Delete the release branch.
+
+9. TODO...