add alias API version beta == v1

[dlebauer]

Description

In the last release I forgot to merge in this minor change.

We've created an v1 that will eventually replace our /beta endpoint. We currently maintain both for backward compatibility, but have started using v1 in our tutorials and documentation that were based on the terraref/traits fork. It would be nice to be able to write code that uses the v1 end point instead of the beta endpoint.

Would it be possible to push this to CRAN as a v0.4.1 'hotfix' so that our current tutorials will work with the official version on cran?

Example

This should work:

options(
        betydb_url = "https://terraref.ncsa.illinois.edu/bety/",
        betydb_api_version = 'v1')
canopy_height <- betydb_search(trait     = "canopy_height",
                               sitename  = "~Season 6",
                               limit     = "1"
                               )

[dlebauer]

(failing tests are from traitbank and shouldn't be affected by this PR)

[dlebauer]

@kimberlyh66 could you please check that this fixes the issues you were having?

[kimberlyh66]

@dlebauer yes, this fixes the problem that I was having

[kimberlyh66]

v1 now works, but need API key

[sckott]

@dlebauer is this ready to look at?

[dlebauer]

yes this is ready to push out to CRAN!