Initial development work on fts-elasticsearch

[Joshua Atkins]

Hi all,

I have started work on an ElasticSearch FTS plugin for Dovecot.

It's available now on GitHub at:

https://github.com/ascendantcom/fts-elasticsearch

Please note that it is still in heavy development right now. It
supports indexing, searching and expunging with some caveats (no
multi-mailbox search or attachments).

Pull requests, suggestions and bug reports very welcome!

Cheers,
Josh