Allow other VR Types for Date Jitter

[wetzelj]

Description

Related issues: #175, #180, #181

Pull requests #180 and #181 were originally based on master before #178 had been merged into master. This pull request merges the latest changes in master with the changes necessary for #175, #180, #181.

The changes that had previously been implemented for #178 were revised with the implementation of changes for #175.

This pull request will supersede #180 and #181. Both of the prior PRs can simply be closed.

Checklist

• [x] I have commented my code, particularly in hard-to-understand areas
• [x] My changes generate no new warnings
• [x] My code follows the style guidelines of this project

Open questions

Questions that require more discussion or to be addressed in future development:

[vsoch]

Thank you @wetzelj ! Let's merge and get this release underway. Sorry for the git-fu!