Consider a new release

I'm a bit biased, but since the release of version 2.3.0, there's been some worthy usability improvements and fixes to Surfraw.

I think we should consider releasing this year.

I'd like to get my elvi-specific bash-completions (!15 (merged)) to be merged before then though. I need to get that finalised. I have some changes in mind still.

See !23 (merged) for updates to the AUTHORS and ChangeLog files to make them reflect what's happened.