Update fish completions (#295)
Update fish completions (#295)

* add aggregation completion
* add completion profile for add
* cosmetic fixes to watson.fish:
  - reorder ungrouped completions
  - add missing comment
* add CSV support to aggregate, log, and report
* extend existing completion profiles:
  - adds --luna to report and log
  - adds --at to stop
* properly display confirm-new options

TailorDev/Watson,TailorDev/Watson