Calls like points have a dependency on the last plot/map/... call

[EagleoutIce]

In general we should allow to add dependency links to these last invocations!

[EagleoutIce]

The call-context query already supports this using linkTo but requires the CFG perspective. In a first step, we may focus on a definition-like reachability, checking and tracking previous calls until we get #1005 or #852. In general, the api for defining such relations should remain the same!

[EagleoutIce]

This could help with set.seed, par, and maybe even options too, including them only if they affect something (or at least allow to remove dominated set.seed(123) calls)!