add more corner-case tests for coordinatesAt()
fix crash when asking for later time than present in track
aprs: update AprsGatherGen.pl

Fix/update its output so it is almost the same as the generated
AprsGatherer_mic_e.h; the only difference is the lack of escaping of
' and \ as single character.
don't forget to restore track length on startup
[API change] take into account that routes can last longer than one day
take number of days into account

* this had been the correct fix in commit 27639676cd021b0d821c0c5d54ff7dd42e107986
debug++
parseTime
wip
realistic route simulation