20  Review template

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## Package Review

*Please check off boxes as applicable, and elaborate in comments below.  Your review is not limited to these topics, as described in the reviewer guide*

- **Briefly describe any working relationship you have (had) with the package authors.**
- [ ] As the reviewer I confirm that there are no [conflicts of interest](https://devguide.ropensci.org/policies.html#coi) for me to review this work (if you are unsure whether you are in conflict, please speak to your editor _before_ starting your review).

#### Documentation

The package includes all the following forms of documentation:

- [ ] **A statement of need:** clearly stating problems the software is designed to solve and its target audience in README
- [ ] **Installation instructions:** for the development version of package and any non-standard dependencies in README
- [ ] **Vignette(s):** demonstrating major functionality that runs successfully locally
- [ ] **Function Documentation:** for all exported functions
- [ ] **Examples:** (that run successfully locally) for all exported functions
- [ ] **Community guidelines:** including contribution guidelines in the README or CONTRIBUTING, and DESCRIPTION with `URL`, `BugReports` and `Maintainer` (which may be autogenerated via `Authors@R`).

#### Functionality

- [ ] **Installation:** Installation succeeds as documented.
- [ ] **Functionality:** Any functional claims of the software have been confirmed.
- [ ] **Performance:** Any performance claims of the software have been confirmed.
- [ ] **Automated tests:** Unit tests cover essential functions of the package and a reasonable range of inputs and conditions. All tests pass on the local machine.
- [ ] **Packaging guidelines**: The package conforms to the rOpenSci packaging guidelines.

Estimated hours spent reviewing:

- [ ] Should the author(s) deem it appropriate, I agree to be acknowledged as a package reviewer ("rev" role) in the package DESCRIPTION file.


### Review Comments