Add: spline chart --stat
Add: stat data list
Mod: stat

Mod: style of history data list
Add: function of adding datasouces
MOD: improve stat page

MOD: jshintrc settings
MOD: stat-data, stat-chart share 1 multiRecords request
MOD: chart layout ‘legend’
Add: field 'date_time' to table ’records‘

Add: new migrateFile
Mod: records logical
Add: stat -- period select

Add: set period of records data
Mod: set config.limit == record number by requesting  through param
‘period’
Mod: stat routeProvider

Mod: split NavCtrl into NavCtrl + StatCtrl
Mod: text-align table cells
Mod: format record time: ‘xx年xx月xx日 hh:mm:ss’
Mod: record list table --stat

show DataSources without record data, all records’ value are replaced
by ‘—’
Mod: show selected period --stat
Mod: stat table style
Add: Widget Column's template && js
Mod: index.js -- delete unused 'next', 'req'
Mod: index.js -- delete unused Record, DataSource
Mod: stat ;  Add: utils.js
Mod: Widget Column

Mod: Widget Column’s style and records data
Add: code annotation for each Widget
Fix: index.js -- add 'req' before 'res'
Fix: record logical
Fix: record logical -- add 'opts' variable
Fix: staticFile -- return Promise object
Fix: staticFile