* feat: support function-format parameters in Insight Data API
* chore: update license header
* chore: format code
* feat: return `complex_fields` in the view API
* feat: include system cluster rollup setting in App Settings API response
* chore: update release notes
* fix: remove func `sum_func_value_in_group` from using aggregation `date_histogram`
* fix: generate unique group id for aggregation name
* fix: sort not work when using function `sum_func_value_in_group`
* feat: update view template
silenceqi