gitlab: Add merge request template

Authored by bgamari on Jan 19 2019, 2:47 PM.

Description

gitlab: Add merge request template

This begins to define our expectations of contributions.

[skip-ci]

Details

Committed
bgamariJan 21 2019, 5:05 PM
Parents
rGHC38d837a46ea8: Fix typo in TcRnTypes.hs [skip ci]
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