Added Kilojoules unit, renamed ActivityStatistics.Kilocalories to ActivityStatistics.Energy. Fixed ST laps not having distance.
Fixed all sorts of dumb typos, added a bunch of undocumented TCX fields that GC uses, fixed issues with GC pace reporting, RK moving time/elapsed time confusion.
Added ActivityStatistic/s sumWith method, used in TCXIO to calculate activity stats from lap stats