.travis.yml: work around Travis's tag blindness using a regexp

stephengold · stephengold · commit 9d9132d5b638 · 2019-03-21T14:07:35.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,6 +6,7 @@ branches:
   - master
   - v3.2
   - /^v3.2.*$/
+  - /^v3.3.*$/
 
 matrix:
   include:
