Inserting data that can not be encoded as JSON should reject #13
Description
The ClickHouseClient currently uses JSON-encoded values when communicating with the ClickHouse server. If this encoding fails, it should properly reject the promise with an Exception.
Encoding most "normal" values works just fine, including UTF-8, newlines etc., but it's easy to run into this error when using different string encodings or binary data (not too common for ClickHouse afaict).