span updates

glow @ b749957c

-Subproject commit 6c99baa6ac43086a5bf94ea37898af9f19cba4fc
+Subproject commit b749957cbf3738e6e21ce40a484d9005dbb5444f

glow-extras @ d836a59a

-Subproject commit e8dc78bc104a0c0efbbcebd2031fc76053fc587a
+Subproject commit d836a59ac09549fd5b3ddbd7ecfe12955a941f40

polymesh @ 65025e1a

-Subproject commit 2ee20575b944d16d44528653aa4ae158099493c8
+Subproject commit 65025e1af6e6abb89401e0337d49310b01ba8833

typed-geometry @ 9f74e822

-Subproject commit fd57c320949e93a701e533ea436e1f4480e76350
+Subproject commit 9f74e822f4b8e3d974de0fd615ca185dd0a34e75

tests/ranges/span.cc

+#include <doctest.hh>
+
+#include <vector>
+
+#include <polymesh/span.hh>
+
+TEST_CASE("pm::span")
+{
+    std::vector<int> v = {1, 2, 3};
+    auto s = polymesh::span<int const>(v);
+    CHECK(s.size() == 3);
+    CHECK(s[0] == 1);
+    CHECK(s[1] == 2);
+    CHECK(s[2] == 3);
+
+    auto test = [](polymesh::span<int const> s) {
+        CHECK(s.size() == 2);
+        CHECK(s[0] == 5);
+        CHECK(s[1] == 5);
+    };
+    test(std::vector<int>(2, 5));
+}