Update Updating and release notes

Updating-and-release-notes.md

@@ -1,9 +1,13 @@
-### Current version: `3.0.0-beta13`
+### Current version: `3.0.0-beta14`
 
 You can check the version installed by running `obi --version`
 
 ### Release notes:
 
+* `3.0.0-beta14`: 
+  - Fixed a memory bug when importing a taxdump and building the list of merged taxids
+  - Improved disk space management when filling columns
+
 * `3.0.0-beta13`: 
   - `obi import`: fixed a critical bug where the last entry of embl and genbank files was not imported.