Suppport for BCE Dates

[rdenney]

What would you like to be added?

Negative dates are not rendered in the timeline views.

0000 to 0010: Some event works just fine, but -0001 to 0010: Some other event does not render.

Why is this needed?

I would love to be able to use Markwhen timelines for studying history in Obsidian.

[chozandrias76]

I think this is related to 1000+ year dates not being supported as well. I think the parser works fine for this, but the renderer does not like dealing with the values