datetime purity. (#1102)
authortsteven4 <13596209+tsteven4@users.noreply.github.com>
Tue, 9 May 2023 13:12:32 +0000 (07:12 -0600)
committerGitHub <noreply@github.com>
Tue, 9 May 2023 13:12:32 +0000 (07:12 -0600)
commit86df734da739efd4760bc47e34fea7c2340c6c06
tree0922d263f37560aa3b7b872f6d415286c094ad03
parent5125480477dc4f115924c5b426eeac45114050d0
datetime purity. (#1102)

eliminate some QDateTime -> gpsbabel:DateTime conversions.  These
can also help performance as DateTime defaults to UTC.

eliminate some unecessary involvment of the UNIX epoch when computing
time differences.
gpx.cc
interpolate.cc
interpolate.h
kml.cc
position.cc
position.h