Please address this major issue

[stereokai]

This attached ticket is old, but still active. It has been arbitrarily closed by @FrenchBen back in 2016 with very minimal further communication. In spite of that, many users are still complaining about this issue. A PR has even been submitted by @collin5 which fixes the problem.

@FrenchBen @jdrouet @jmorganca @seanli @TeckniX
Please reopen the closed issue and address the community.
I don't know which of you is still taking part here - so apologies in advance for over tagging.

Issue: Adding a volume to an existing kitematic container
PR 1: No option to add volumes
PR 2: Add custom volumes as an option