Ref T241, Ref T243, ITimestampWithOffsetObjectList

* there was already ITimestampWithOffsetBased for objects
* this creates the container version
* functions to add objects (parts/situations) and guarantee the sort order
* moved push_frontMaxElements to CSequence (not specific for timestamp lists)
* added in-place reverse

src/blackmisc/aviation/aircraftsituationlist.cpp

@@ -10,7 +10,6 @@
 #include "blackmisc/aviation/aircraftsituationlist.h"
 #include "blackmisc/aviation/aircraftsituation.h"
 #include "blackmisc/geo/elevationplane.h"
-
 #include <tuple>
 
 using namespace BlackMisc::PhysicalQuantities;