Added new by reactor
Added By reactor to array to be registered
Added error checking when instantiated, emits data regardless to allow it to still be chainable.
[api test] Properly pipe to unique pipe-chains in `.by()`.
[test] Test `.by(Array, reactor)`.
Merge pull request #38 from nodejitsu/gh-36

Added .by()
[api test] Added `.thru()` for piping to multiple independent reactors.
[test] Added test for cannonical `thru` example: react to `.over()` and `.under()` independently.
Merge pull request #39 from nodejitsu/feature-thru

React to different criteria independently with `.thru()`
Added ability to listen on unix sockets
Added tests for listening on unix socket
[fix] Renamed test macros to make sense for more than 2 types of connections
[dist] Version bump. 0.3.0
[refactor dist] Update to `window-stream@0.3.0`
[refactor breaking] `.thru()` is now `.around()`.
[refactor minor] Be lazier when loading reactors.
[api test] Added `.tag()` reactor for setting tags based on values calculated from other reactors.
[api test] Added `.coalesce()` reactor and tests.
[fix] Ensure that tags are properly set before appending to them.
[api test] Added `.meta()`, `.anyMeta()` and `.allMeta()` reactors for working with new `meta` property on data events for working with more structured data.