Fixes for issues which were reported since v1.0.0 ### Fixed - Allow `nullptr` as parameter for `mocpp_set_console_out` ([#224](https://github.com/matth-x/MicroOcpp/issues/224)) - Fix `mocpp_tick_ms()` on esp-idf roll-over after 12 hours - Pin ArduinoJson to v6.21 ([#245](https://github.com/matth-x/MicroOcpp/issues/245)) - Fix bounds checking in SmartCharging module ([#260](https://github.com/matth-x/MicroOcpp/pull/260))