Improves pure-Python ECI/ECEF accuracy#105

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geospace-code:mainfrom

ryanpavlick:improve-pure-python-eci-ecef-accuracy

Commits on Mar 27, 2026

adding karney.py module with Karney's geodesic algorithms for the ellipsoid and some additional functions in nvector.py; along with associated tests
ryanpavlick
committed

Commits on Apr 27, 2026

Improve pure-Python ECI/ECEF accuracy
ryanpavlick
committed