Booleans: a prism cut beside the target's other faces takes the exact 2D route in a column (#1629)

Thanks @phanoob.

crates/kernel/src/lib.rs

@@ -90,6 +90,7 @@ mod polybool;
 mod polyhedron;
 mod prism;
 mod prism_curve;
+mod prism_local;
 mod prism_measure;
 pub mod provenance;
 mod record;