Revise 0.171 release notes
Queries with unsupported cast to JSON will fail in 0.171. Make this
explicit in the 0.171 release notes.
@@ -14,6 +14,7 @@ General Changes
* Add support for ``CHAR(n)`` data type to common string functions.
* Add :func:`codepoint`, :func:`skewness` and :func:`kurtosis` functions.
* Improve validation of resource group configuration.
+* Fail queries when casting unsupported types to JSON; see :doc:`/functions/json` for supported types.
Web UI Changes
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