One line assignment if idiom is nice.
Rudimentary beginning of whisper time series file output.
Always use UTC time, and don't try to use a time.Time as an integer value in string
substitution.
First pass at full WhisperOutput implementation, one plugin managing all files in the
whisper db tree.
Fix some bugs flushed out by compiling, running, and first testing.
Set db intervals up correctly, further stubbing out of config setup, create folders when
necessary.
Some fixes to the statmetric format strings.
Whoops, zero is still an integer...
Merge branch 'features/fileoutput-reboot' into features/whisper-output

Conflicts:
	pipeline/outputs.go
Switch to whisper-go fork, close cleanly on stop event.
Merge branch 'features/fileoutput-reboot' into features/whisper-output
Merge remote-tracking branch 'origin/dev' into features/whisper-output
WhisperRunner tests.
Changed WhisperRunner to an interface so we can mock it, added tests for
WhisperOutput.
Merge branch 'dev' into features/whisper-output

Conflicts:
	pipeline/statsd_input_writer.go
Better visual differentiation of var names and drop unnecessary assignment.