replace recursive MeshClean with an iterative version to avoid some stack overflows (see issues # 57, 65 and 69)
replace recursive MeshClean with an iterative version to avoid some stack overflows (see issues # 57, 65 and 69)

helloncanella/poly2tri.js,r3mi/poly2tri.js,helloncanella/poly2tri.js,r3mi/poly2tri.js,r3mi/poly2tri.js,helloncanella/poly2tri.js