Add irc_output plugin.
remove JoinAndPart
docs: Add irc_output to outputs/index_noref
Add IrcOutput to changelog
Issue #741 symlink log_directory

This will only address the issue for the root directory,
filepath.Walk will not follow symlinks below it.
http://golang.org/pkg/path/filepath/#Walk
AMQP cleanup and race condition fixes.
Merge pull request #973 from mozilla-services/issue_741

Issue #741 symlink log_directory
Merge pull request #965 from ecnahc515/irc_output

Add irc_output to heka
Merge pull request #974 from mozilla-services/amqp-cleanup

AMQP cleanup and race condition fixes.
Added anomaly detection support to the stats graph filter, some doc
tweaks / fixes.
Globals are now available as an attribute on the PipelineConfig struct
instead of through a global (and race-y) Globals() function.
Pull in updated mozsvc plugins w/ improved sentry client.
Merge branch 'dev' into stat-graph-anomaly
Multiple anomaly detection configs already supported *within* a single
anomaly_config string, whoops.
Merge pull request #981 from mozilla-services/non-global-globals

Globals are now available as an attribute on the PipelineConfig struct
Improve the anomaly detection module documentation
Merge pull request #983 from mozilla-services/anomaly_detection_docs

Improve the anomaly detection module documentation
Use title correctly.
Use add_dependencies correctly.
Have to define the plugin target before we can refer to it.