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Mapqkz was missing the block of code that, in mapqk, accounts for light-deflection near the Sun. After corresponding with Patrick Wallace, I added that code into mapqkz. I then rewrote the unit tests for mapqk and mapqkz. The test for mapqk now takes USNO data for the geocentric apparent position of Arcturus and tries to calculate it from Acturus' mean position and motion parameters. The test for mapqkz sends identical inputs through mapqk and mapqkz and verifies that the same result comes out.