Add oyaml recipe

[bebatut]

Hi,

This PR is for having oyaml in conda-forge. The meta.yaml file has been generated using conda skeleton pypi oyaml and tests added after

Bérénice

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipes/oyaml) and found some lint.

Here's what I've got...

For recipes/oyaml:

• The recipe could do with some maintainers listed in the extra/recipe-maintainers section.

[bgruening]

license_file: LICENSE

[bgruening]

only one pip

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipes/oyaml) and found it was in an excellent condition.

[synapticarbors]

The license_file isn't included in the source distribution, so can you please manually package it:

https://conda-forge.org/docs/meta.html#packaging-the-license-manually

and put the following link to the issue upstream to include the license in the source distribution as a comment in the recipe so that if the issue is fixed upstream, there is a reminder to change the recipe in the feedstock in future releases:

wimglenn/oyaml#12

[synapticarbors]

I do not think you need pyyaml as a host requirement since it isn't necessary to build the package.