attribution for previous merges

Author: dhellmann

docs/en/history.rst

@@ -10,6 +10,9 @@ dev
   - Worked on some brittle tests.
   - Received updates to Japanese translation of the documentation from
     :bbuser:`t2y`.
+  - Fix the test script and runner so the user's ``$WORKON_HOME`` is
+    not erased if they do not have some test shells installed.
+    (big thanks to :bbuser:`agriffis`).
 
 3.2