Merge branch 'dev'

* dev:
  Changes for v0.4.8
  v0.4.8
  Fix pattern format for count
  Update alerter docs
  Remove useless spaces
  Add comment
  Rebuild simple hipchat alerter
  Net protocol can be also used in all json data
  Send trend to alerter the same; Fix re-alert on connect
  Remove parse method; just use the event directly
  Add option `notify` to hipchat & remove since
  Log full address on connection failure to alerter
Delay connect alerter
Fix v0.4.8 connect callback undefined
Use `upper_90` as default timer field in statsd client