* Handle shell completion filter by group
* completion: added TestCompleteAllCobraRequestCmds
* completion: added TestCompleteFilterActiveGroup
* Tests are written
* Switched most proj.Abs calls to proj.Rel
* Moved time functions from pkg stringz to pkg timez
* Refactor options.Opt
* wip: initial work on configurable time layout
* wip: most printers now respect format.datetime and friends
* Folded pkg timefmt into timez
* Refactor options.Opt; refine options
* Add 'sq config set OPTION --help' mechanism
* Finished completion of OptDateFormatAsNumber and OptTimeFormatAsNumber
* CHANGELOG text clarification
* Dialing in config/options
* Yet more dialing in of config/options
* Refactor output writers
* YAML output for more commands
* refactor: partially moved over driver.Tuning params to options
* All knobs moved to options
* sq config edit: now has comments for options
* Major work complete on config/options overhaul
* Major work complete on config/options overhaul
* Updated help text for 'sq version'