Merge pull request #1207 from RobWalt/triangulate-spade-optimization

triangulate-spade: small optimization, potentially up to a factor of 1/2

geo/src/algorithm/triangulate_spade.rs

@@ -412,6 +412,7 @@ fn iter_line_pairs<T: SpadeTriangulationFloat>(
         lines
             .iter()
             .enumerate()
+            .skip(idx0 + 1)
             .filter(move |(idx1, line1)| *idx1 != idx0 && line0 != *line1)
             .map(move |(idx1, line1)| [(idx0, line0), (idx1, line1)])
     })