Add all-contributors bot

[ericmjl]

We should ensure that all contributions are recognized. Following the all contributors spec, we should use the bot to help recognize contributors of all kinds to the project.

https://allcontributors.org/

[ericmjl]

@all-contributors init

[allcontributors]

@ericmjl

I could not determine your intention.

Basic usage: @all-contributors please add @Someone for code, doc and infra

For other usages see the documentation

[ericmjl]

@all-contributors please add @ndousis for code

[allcontributors]

@ericmjl

I've put up a pull request to add @ndousis! 🎉

[ericmjl]

@all-contributors please add @andrewgiessel and @maxasauruswall for code

[allcontributors]

@ericmjl

I've put up a pull request to add @andrewgiessel! 🎉

[ericmjl]

@all-contributors please add @maxasauruswall for code and docs

[allcontributors]

@ericmjl

I've put up a pull request to add @maxasauruswall! 🎉

[ericmjl]

@all-contributors please add @ericmjl for code, docs

[allcontributors]

@ericmjl

I've put up a pull request to add @ericmjl! 🎉

[ericmjl]

@all-contributors add @MihirMetkar for ideas, code

[allcontributors]

@ericmjl

I've put up a pull request to add @MihirMetkar! 🎉

[ericmjl]

@all-contributors please add @mccaron707 for docs

[allcontributors]

@ericmjl

I've put up a pull request to add @mccaron707! 🎉

[andrewgiessel]

@all-contributors please update

[allcontributors]

@andrewgiessel

I could not determine your intention.

Basic usage: @all-contributors please add @Someone for code, doc and infra

For other usages see the documentation

[andrewgiessel]

@all-contributors please add @giessel for docs

[allcontributors]

@andrewgiessel

I've put up a pull request to add @giessel! 🎉

[andrewgiessel]

@all-contributors please add @giessel for docs

[allcontributors]

@andrewgiessel

@giessel already contributed before to doc

[ericmjl]

@all-contributors please add @dmnfarrell for code

[allcontributors]

@ericmjl

I've put up a pull request to add @dmnfarrell! 🎉

[ericmjl]

@all-contributors please add @farbod-nobar for code

[allcontributors]

@ericmjl

I've put up a pull request to add @farbod-nobar! 🎉

[ericmjl]

@all-contributors please add @JacobHayes for infrastructure and packaging

[allcontributors]

@ericmjl

I've put up a pull request to add @JacobHayes! 🎉