Add an option to carry forward the last specified tag

[BorgeJorge]

Apologies, this is a feature request, not an issue.

I have no idea whether this is possible, but if it is, it'd be great to have an option that would use the last-specified tag on the current slide, until the tag is explicitly set once again on the current slide, at which point that becomes the new default tag moving forward.

[CodingTigerTang]

Thanks @BorgeJorge, this is a really good feature idea. Carrying forward the last specified data-roadmap tag would make authoring much easier, especially for existing multi-slide deck. I’m going to keep this open as a feature request.

[CodingTigerTang]

Working on this in branch feat-carry-forward-tag