Use strftime for logger time
Update built-in hipchat alerter
Fix lev > 1 to lev > 0
v0.5.5 changes
v0.5.5
Merge branch 'dev'

* dev:
  v0.5.5
  v0.5.5 changes
  Fix lev > 1 to lev > 0
  Update built-in hipchat alerter
  Use strftime for logger time