Pyfnalsnow

* ticket.py - removing leftover debugging statement, oops

* ticket.py - journal entries now correctly point at journal timestamps,
not the parent ticket timestamp
* ticket.py - timestamps now convert back to your local time zone from UTC
when printed

* Incident.py - changing how we detect resolved tickets.
* Incident.py - tktStringResolution() sees cancelled tickets and
prints different information for them
* ticket.py - tktStringResolution() sees cancelled tickets and
prints different information for them

* Incident.py - can now search by ticket age
* Incident.py - added debugging information to tktFilter()
* snow-incident-list - search by ticket age

* RITM.py - tktIsResolved() now says "False" for work-in-progress tickets
* various Exceptions fixed

* added CentOS 8 support (mostly Requires and BuildRequires work)
* snow-tkt - documentation formatting fix
* no longer using 'instance', now need 'hostname' for configuration
(because instance isn't stable enough)
* `userLink()` - more general form of userLinkName() and usrLinkUsername()
* snow-tkt-assign - bug fixes for `--debug` call