parallel should support limit = Infinity

[karmaniverous]

parallel should an arbitrary number of parallel executions. Semantically this could be expressed with limit equal either to undefined or Infinity.

In the current implementation, limit: undefined is precluded by type requirements, and limit: Infinity blows up at this line.

[aleclarson]

Hey @karmaniverous! This is fixed in the Radashi fork in v12.3.0.

Note: The limit cannot be undefined still, so I recommend using ?? Infinity instead.