If you inspect the
[output](https://travis-ci.org/bitemyapp/esqueleto/jobs/411001100)
from a recent travis build you'll see that the `GHCVER=7.10` and
`GHCVER=8.00` values are preventing tests from actually running:
```
...
The command "stack test -- esqueleto:postgresql" exited with 1.
$ stack test -- esqueleto:sqlite
Getting project config file from STACK_YAML environment
Could not parse '/home/travis/build/bitemyapp/esqueleto/stack-8.0.yaml':
YAML exception:
Yaml file not found: /home/travis/build/bitemyapp/esqueleto/stack-8.0.yaml
See http://docs.haskellstack.org/en/stable/yaml_configuration/
...
```
I've updated to match the 8.2 and 8.4 versions that are live as of d2fdaaf.
