1.6 release candidate changes. There may be more PRs before we get to 1.6.
update documentation to mention new features and changes
fix a compilation error related to the use of the GLM math library
fix a bug in which the time slider was not updating correctly for time series data
update the versions of most github actions to remove several warnings. There are still two persistent warnings: one about running sphinx in a directory that contains a requirements.txt file, and one related to installing Qt. Neither is currently a showstopper for the builds.
1.6 release candidate changes. There may be more PRs before we get to 1.6.