Tychos model interface to the Skyfield

[mindaugl]

Hi,
First of all wanted to thank for all who contributed to the Skyfield, its great documentation and easy to understand APIs made the below project possible!
tychos_skyfield package has Python implementation of the Tychos solar system model and has an interface class to the Skyfield, making it possible to use Tychos objects directly in the Skyfield. This allows to use any scripts that use Skyfield objects to be used with the Tychos objects instead by simple change of source from where the objects are taken (Tychos model package instead of the JPL ephemerides).
Please let me know if any questions or suggestions about the tychos_skyfield package, thank you!

https://github.com/mindaugl/tychos_skyfield