Try testing with GHC 8.2

ndmitchell · ndmitchell · commit 04ce6bc0844e · 2017-05-10T12:52:10.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,6 +5,7 @@ env:
 - GHCVER=7.8.4
 - GHCVER=7.10.3
 - GHCVER=8.0.2
+- GHCVER=8.2.1
 - GHCVER=head
 
 script:
