ArduinoJson 6.16.0 * Added comparisons (`>`, `>=`, `==`, `!=`, `<`, and `<=`) between `JsonVariant`s * Added string deduplication (issue #1303) * Added `JsonString::operator!=` * Set `ARDUINOJSON_DECODE_UNICODE` to `1` by default * Fixed `copyArray()` not working with `String`, `ElementProxy`, and `MemberProxy` * Fixed error `getOrAddElement is not a member of ElementProxy` (issue #1311) * Fixed excessive stack usage when compiled with `-Og` (issues #1210 and #1314) * Fixed `Warning[Pa093]: implicit conversion from floating point to integer` on IAR compiler (PR #1328 by @stawiski)