For FnSink, add swift implementations for remove and reset. Also update the fn swift type to take an optional second parameter.
For FnSink, add swift implementations for remove and reset. Also update the fn swift type to take an optional second parameter.

foam-framework/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm,jacksonic/vjlofvhjfgm,foam-framework/foam2,foam-framework/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm