Added RaceStartTypeEnum.
Refactored RaceStartStatusDecoder to implement the MessageDecoder interface.
Documented RaceStartStatus, and it actually exposes its properties now.
Updated RaceStartStatusDecoderTest.
issue #35#36
#story[1095]
Fixed the networking imports.
Race now keeps a reference to its Race, Boat, and Regatta data sources.
VisualiserRace can be provided with new Race/Boat/Regatta data sources during runtime. Currently it updates boundary and legs with a new RaceDataSource, and marker boats with a new BoatDataSource.
Moved Boat/MockBoat/VisualiserBoat into it.
Moved Polars, polarParser, VMG, and polar exception.
Moved the networking stuff into it.
Moved angle, azimuth, bearing into it.
Moved gpscoordinate into it.
Moved mark/compoundMark into it.
Moved leg into it.
Moved trackpoint into it.
fjc40