1.1.1

Change in ISO8601 API. Version 1.1.1

Used ISO8601 lib and exposed more functions in interface.

1.1.0

Added CHANGELOG.

v1.0.2

README.MD added.

v1.0.1

Fixed datetime parsing.

First release: basic gpx type and conversion functions between xml type and gpx type.

gpx.version field: switched type to string instead of float,

which did not make sens.