Don't test with GHC 7.8.3 anymore, and use 7.10.2 instead of 7.10.1.

Author: svenpanne

.travis.yml

@@ -3,9 +3,8 @@ env:
  - CABALVER=1.16 GHCVER=7.2.2
  - CABALVER=1.16 GHCVER=7.4.2
  - CABALVER=1.16 GHCVER=7.6.3
- - CABALVER=1.18 GHCVER=7.8.3
  - CABALVER=1.20 GHCVER=7.8.4
- - CABALVER=1.22 GHCVER=7.10.1
+ - CABALVER=1.22 GHCVER=7.10.2
  - CABALVER=head GHCVER=head
 
 matrix: