JSDoc theme is out-dated — need to migrate from clean-jsdoc-theme v4 → v5

[bbusschots]

Version 5 is a ground-up re-write, and looks to be much improved.

However, there are a lot of breaking changes, so this will not be a quick and easy change.

Details: https://github.com/ankitskvmdam/clean-jsdoc-theme/releases#release-v5.0.0