pullRequestOpened: |
  :wave: Thanks for creating a PR!   

  Before we can merge this PR, please make sure that all the following items have been 
  checked off. If any of the checklist items are not applicable, please leave them but
  write a little note why.   

  ______

  For contributor use:

  - [ ] Targeted PR against correct branch (see [CONTRIBUTING.md](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
  - [ ] Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
  - [ ] Code follows the [module structure standards](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules/structure.md).
  - [ ] Wrote unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
  - [ ] Updated relevant documentation (`docs/`) or specification (`x/<module>/spec/`)
  - [ ] Added  relevant `godoc` [comments](https://blog.golang.org/godoc-documenting-go-code).
  - [ ] Added a relevant changelog entry to the `Unreleased` section in `CHANGELOG.md`
  - [ ] Re-reviewed `Files changed` in the Github PR explorer

  ______

  For admin use:

  - [ ] Added appropriate labels to PR (ex. `WIP`, `R4R`, `docs`, etc)
  - [ ] Reviewers assigned
  - [ ] Squashed all commits, uses message "Merge pull request #XYZ: [title]" ([coding standards](https://github.com/tendermint/coding/blob/master/README.md#merging-a-pr))


  Thank you for your contribution to the Cosmos-SDK! :rocket: