Updating-and-release-notes.md

-### Current version: `3.0.1b21`
+### Current version: `3.0.1b22`
 
 You can check the version installed by running `obi --version`
 
@@ -21,10 +21,13 @@ python3 setup.py install
 
 ### Release notes:
 
+* `3.0.1b22`:
+  - `obi rm`: now removes column files and AVL files that are not used by other views, effectively freeing disk space.
+<br>
+
 * `3.0.1b21`:
   - New command: `obi taxonomy` to add local taxa
-  - `import`: now automatically renames `scientific_name` tag to `SCIENTIFIC_NAME`, and suggests using `--input-na-string` when a
-sequence import fails
+  - `import`: now automatically renames `scientific_name` tag to `SCIENTIFIC_NAME`, and suggests using `--input-na-string` when a sequence import fails
   - `head`: added output format options
 <br>