[travis-ci] Bump to cabal-install-1.20 for GHC 7.8.4.
authorLennart Kolmodin <kolmodin@gmail.com>
Sat, 18 Feb 2017 10:42:08 +0000 (11:42 +0100)
committerLennart Kolmodin <kolmodin@gmail.com>
Sat, 18 Feb 2017 10:42:08 +0000 (11:42 +0100)
commit19572bafdd6880e8e922f8830bb98f6a2d4020ea
tree6570731a2e911b88c756dd30158b9fa0c8a20a32
parent169cd4d95a4482d68d58cc6ccec83a5c9363f45f
[travis-ci] Bump to cabal-install-1.20 for GHC 7.8.4.

Again, trying to resolve haskell/cabal#4331.
.travis.yml