Add changeset for related fixes

Author: eyelidlessness

.changeset/wise-dancers-itch.md

@@ -0,0 +1,10 @@
+---
+"@getodk/xpath": patch
+---
+
+Improved consistency with Collect/JavaRosa:
+
+
+- `area` and `distance` handle a trailing semicolon in serialized semicolon-separated `geopoint` lists
+- `distance` produces an error for invalid input
+- `area` returns `0` for invalid input