4.3.0 (2021-09-25) Features allow array for headers option (#3847) (9911437) gracefully and force shutdown (#3880) (db24b16) Bug Fixes avoid web socket connection when web socket server is not running (#3879) (8874d72) display file name for warnings/errors in overlay (#3867) (d20def5) formatting errors/warnings (#3877) (f0dbea0) handle 0 value of the port option property (ed67f66)