Update to HEAD

[wesm]

No description provided.

[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 (recipe) and found it was in an excellent condition.

[wesm]

@ocefpaf something wrong with Circle CI today?

[ocefpaf]

CircleCI changed their policy on tests from forks. You will need to navigate to

https://circleci.com/gh/wesm/arrow-cpp-feedstock

and click on follow project. After that just send an empty commit here and CircleCI should start. Unfortunately that is not something we can automate. We are working with Circle to see if we can get the old behavior back.