Merge pull request #6 from HubSpot/master

Merge from Hubspot
cool down improvements

- even if a task is always failing, don’t go into cool down unless it’s
failing rapidly.
Merge branch 'master' into hs_staging
Merge branch 'master' into hs_staging
fixing style issues
Merge pull request #7 from HubSpot/master

Merge from hubspot
ignore build.json file
improvements / fixes to vagrant rig (fixes #225)
Merge pull request #227 from HubSpot/hs_staging

Cooldown improvements
initial commit for slave placement

still need tests
Whirlwind tour of the basepom based build.

Guess I should write some docs here.
Merge pull request #8 from HubSpot/master

Merge from hubspot
some slave placement tests
name change
name tweak
Merge pull request #231 from hgschmie/basepom-primer

Whirlwind tour of the basepom based build.
Proxy history manager calls
Use noop HistoryManager when no database avail
Remove singleton annotation

It currently doesn’t work with SingularityStartable.
merge in from master