Merge branch 'departure-boards-sx' into jgrpp

Conflicts:
	src/saveload/extended_ver_sl.cpp
	src/saveload/extended_ver_sl.h
	src/window_type.h

src/saveload/extended_ver_sl.h

@@ -24,6 +24,8 @@ enum SlXvFeatureIndex {
 	XSLFI_TRACE_RESTRICT,                         ///< Trace restrict
 	XSLFI_PROG_SIGS,                              ///< programmable signals patch
 	XSLFI_ADJACENT_CROSSINGS,                     ///< Adjacent level crossings closure patch
+	XSLFI_DEPARTURE_BOARDS,                       ///< Departure boards patch, in ticks mode
+	XSLFI_TIMETABLES_START_TICKS,                 ///< Timetable start time is in ticks, instead of days (from departure boards patch)
 
 	XSLFI_SIZE,                                   ///< Total count of features, including null feature
 };