RFE: taskopen -V
-V as in Versions and Verbose

This option would be the functional equivalent of "taskwarrior version + diag" output, listing versions and locations of taskopen, taskwarrior, perl etc, with full debug and configuration and license details. (some of this could be moved from "taskopen -h") This will make debugging a lot easier. 

This also allows the output of "taskopen -v" to be as terse as can be.
