Patterns refresh interval changed to static number: 60 * 1e3 = 1min
Add built-in cluster support for analyzer
Add built-in cluster support for webapp
Add config items `workers` for analyzer & webapp
Update faq#analyzer-cluster, now it was built-in supported
v0.4.3
Merge branch 'dev'

* dev:
  v0.4.3
  Update faq#analyzer-cluster, now it was built-in supported
  Add config items `workers` for analyzer & webapp
  Add built-in cluster support for webapp
  Add built-in cluster support for analyzer
  Patterns refresh interval changed to static number: 60 * 1e3 = 1min