chore(ci): relax clone depth

DirtyF · DirtyF · commit 26c8b0dcd4ba · 2019-01-04T16:59:44.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,7 +5,7 @@ rvm:
   - 2.6
   - 2.4
 git:
-  depth: 1
+  depth: 3
 
 # we need a more recent cmake than travis/linux provides (at least 2.8.9):
 addons:
