restore ability to remove cents from amounts

[agrberg]

I wasn't able to find an explicit reason to remove this feature when making the breaking change in #20 so I'm adding it back as another library depends on the no_cents option to Money#format.

[agrberg]

@dblock updated but GH isn't letting me re-request a review for whatever reason 🤷

[dblock]

I missed this for some reason (GH notifications 😠 ), sorry about that.

Update README, and maybe we can add an UPGRADING file like https://github.com/ruby-grape/grape/blob/master/UPGRADING.md that describes this change?

Also could use another (co)maintainer on this, want in @agrberg? Drop me a note to dblock[at]dblock[dot]org with your rubygems username.

[agrberg]

@dblock added UPGRADEING.md as requested and broke out the 3.0.0 changes from the 2.0.0 changes for easier visibility.

Happy to help with this gem as well. I'm also a minor co-maintainer on your https://github.com/dblock/iex-ruby-client/ gem as well 🙌

For whatever reason I still cannot request a re-review so I'll be emailing you as well.

[joeyAghion]

@dblock you're in!

@agrberg thanks for the contribution. Glad to see that the library is useful for you.

[dblock]

Can we add @agrberg as a co-maintainer and give him rubygems access to make a release?

[annacarey]

@agrberg we ended up needing your changes for something at Artsy so I released the new version. Thank you so much for your contributions here!