The 3.1.0 version of the libVDA5050++. It follows the VDA5050 2.1.0 standard. Features: - add ControlSink for pause/resume/cancel of the current order Fixes: - header.timestamp ms resolution - spdlog invocation bug - reflect message de-serialization errors in the state - order acceptance criteria (new order with updateId>0) - retain paused state after canceling