[Discussion] Allowing users to override Prism instance

[alexmozaidze]

There are many opinionated plugins for Prism, that may not satisfy most people. Some will say that X is bloat, while others may have their stuff broken by the unexpected features, so I wonder: Why not let users provider their own instance of Prism? Kind of like it's already done with MarkdownIt.

This would satisfy everyone who is seeking new features, and would not break old projects. Everyone is happy.