RFR: 226: Fewer default columns for `git pr list`

[Robin Westberg]

On Tue, 14 Jan 2020 14:33:51 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this small patch that uses fewer columns by default for `git pr
> list`. The columns are of course still user configurable, either via the
> `--columns` flag to `git pr list` or via the `pr.list.columns` configuration
> variable.
> 
> Thanks,
> Erik
> 
> ## Testing
> - [x] Manual testing of `git pr list`

Looks good!

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Marked as reviewed by rwestberg (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/351