DouglasPeuckerMod: add hard limit for number of points
PythonGlue: fix start and endtime of polyline reduction
python: implement flight analysis
python: implement google polyline encoding
python: clean up
PythonGlue: add encode method to flight object

The fast lane to create a encoded flight dictionary
PythonGlue: obey python error handling
GoogleEncode: delta-encoding is optional