Provide Set Related Operations: Union, Intersection, Difference

[djyuhn]

I have a few questions for set related operations on geometries.

1. Are there plans to provide set related operations for geometries, similar to the operations provided by the simplefeatures package here? For example, finding the intersection between two polygons?
2. If there are no current plans for adding this functionality would the repository owners be open to contributions to provide this functionality?

Providing these kinds of operations would be useful for performing more complex analysis on geometries and would avoid introducing another dependency to conduct these operations and translating between the package types.