Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge pull request #126 from dmend/master

Don't use mutable types for default parameters
changes to sys assist
Merge remote-tracking branch 'upstream/master'
status api implemented
status API with unit testing
update get_disk_usage()
pep8 corrections
Merge pull request #127 from stevendgonzales/master

Status API and associated Unit tests
Fixed spelling in config settings
added service to publish worker status/stats
Merge pull request #128 from chadlung/master

Fixed spelling in the config settings, config value for vacuum was wrong
completed unit tests for worker status publishing process
Merge remote-tracking branch 'upstream/master'
Merge pull request #129 from stevendgonzales/master

Worker Status publishing Processing and Unit Tests
Pep 8 fixes.