Added map matching to common Match protocl
Merge pull request #378 from aphyr/match-maps

Added map matching to common Match protocl
streams/pipe
Merge branch 'master' of github.com:aphyr/riemann
streams/rate: slight docstring clarification
Fix a couple bugs in nbhm-index expiry

Events with :ttl keys present but nil were not receiving default ttls,
and deletion of expired events didn't use delete-exactly, which could
lead to a race condition where expiry deleted newer versions of events.
Document the use of sets as predicates to (where...)
Merge pull request #382 from ulises/master

Document the use of sets as predicates to (where...)
Deprecate streams/over and streams/under
Merge branch 'master' of github.com:aphyr/riemann
Improved docstrings for with and default.
Deprecate within and without
streams/rate: document expiry better
JSON-decoded events now have correct timestamps.

Millseconds are not seconds.
Use a set to filter services.
Merge pull request #385 from ulises/master

Use a set to filter services.
Websocket conn logs: now debug, not info
Fixes #392, update tests so that Unix time is calculated in seconds
Option to supply a custom message formatter for Slack integration
Merge pull request #394 from jwinter/fix-milliseconds-unix-test

Fixes #392, update tests so that Unix time is calculated in seconds