Support NASA HIWAT and European COSMO weather prediction models

[xhqiao89]

NASA HIWAT model: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20180003183.pdf

COSMO model: http://www.cosmo-model.org/

[snowman2]

I am happy to see you contributing to RAPIDpy! A couple of things I would like to see before merging this in would be:

1. Tests demonstrating that your additions work and to ensure stability moving forward.
2. Your commit history squashed into logical groupings.

Thanks and please ask questions if you have any.

[snowman2]

Also, adding to the documentation about the models supported.

[xhqiao89]

@snowman2 This great project has benefited our research for years and we are glad to contribute to it. The preliminary PR is our first step on this right path. We will be updating the it to meet code standards and updating doc over the next few weeks. Thanks.

[snowman2]

Sounds good 👍

[snowman2]

I updated my author information in the commit history and it seems to have impacted this PR. You will need to rebase your branch to this repos master branch. A simpler approach may be to create a new branch from this repos master branch and cherry pick your changes into the new branch. Feel free to reach out if you have any questions. Thanks!

[xhqiao89]

@snowman2 Thanks for the information.