Modifications compile, testing needed
Switch to long, add DateTime test

Since the Time Impl type uses long integers rather than uint32_t,
switch to that. There are some int-long conversions happening, but
that is probably Ok (at least for now).
Merge remote-tracking branch 'upstream/develop' into mrg
Merge branch 'timeseries_seconds' of github.com:jasondegraw/OpenStudio into jasondegraw-timeseries_seconds
Merge branch 'develop' of github.com:NREL/OpenStudio into develop
Clear the current view before deleting it

[#58559356]
Merge pull request #691 from NREL/58559356_PATTabSwitching

58559356 pat tab switching