Add support for GHC < 7.10

Question

Travis builds the library with 7.10.3 and 8.0.1. There's no immediate plan to support older GHC at the moment. Feel free to reopen if it's necessary.

Mitsutoshi Aoe · Answer 1 · Tue Aug 02 2016 13:44:06 GMT+0800 (China Standard Time)

Travis builds the library with 7.10.3 and 8.0.1. There's no immediate plan to support older GHC at the moment. Feel free to reopen if it's necessary.