update example config with icon names

Signed-off-by: Ethan Vizitei <ethan.vizitei@gmail.com>
add some test data for waypoints by name

Signed-off-by: Ethan Vizitei <ethan.vizitei@gmail.com>
include lat/long in comments

Signed-off-by: Ethan Vizitei <ethan.vizitei@gmail.com>
add support for waypoint_by_name conversion

Signed-off-by: Ethan Vizitei <ethan.vizitei@gmail.com>
version bump to 0.4.0