update changelog
Added 'proxy_uri' option to AWS-based plugins.
Rename sort to collate. I felt that collate was a more accurate term.
- Update changelog through 8f10ba8a854df9a3f678c363af0a52f168285c8e
- tweak wording
Merge pull request #714 from malthe/add-aws-proxy-support

Added 'proxy_uri' option to AWS-based plugins.
Merge branch 'master' of https://github.com/Syntigo-nv/logstash