switch logger to bunyan
depercated koa-logger; use koa bunyan-logger
analyzers cluster how to
parallel filter history datapoints from ssdb
jshint fixes
remove koa-logger from deps
add changelog
add option `host` to all socket servered services
trending: use zset & wma, no more `zcount`; close
https://github.com/eleme/node-bell/issues/23
util function to convert timespan to seconds
new trending
sort by trending: data/multi
typoes
v201409181956 version style.css
new version view {for sort}
typo
update quickenters schema
add switch helper function to template
return false on illegal timespan
finally, the past time can be
displayed!https://github.com/eleme/node-bell/issues/17