Pick up the GPX 2.6.8

markwal · markwal · commit 8b8ad893d6d4 · 2020-12-01T05:58:38.000Z
diff --git a/GPX b/GPX
@@ -1 +1 @@
-Subproject commit 3e3e6e71d3388958cec5016371f7f31d14442498
+Subproject commit 28f346005ee37117b1f042dd66570d108726a02f
