Added the 'get_partitions', 'nth_linear_recurrence' and 'nth_linear_recurrence_with_modulo' operators.

Added 'black_hole_surface_tides' now that I understand it. I also added a more general 'tidal_force' operator.

Added 'is_harmonic_divisor_number', 'is_antiharmonic', 'harmonic_fraction', 'alternating_harmonic_fraction', 'harmonic_residue', 'harmonic_mean', and 'antiharmonic_mean' operators.

Added 'hyperoperator' and 'hyperoperator_right' operators.

Added 'root_mean_square', 'stirling1', 'stirling2', 'ackermann', 'square_super_root', 'cube_super_root' and 'super_root' operators.

Added 'filter_integers', 'filter_on_flags', 'is_k_perfect', 'phitorial', and 'relatively_prime' operators.

If the OEIS text file for a particular sequence has a last line that doesn't end with a linefeed, rpn now parses out the last value correctly, instead of missing it completely.

Finally, after many years complex numbers are also formatted according to the same rules for formatting regular real numbers.

rpnChilada also finally recognizes the Python syntax for imaginary numbers of "99.99999j", i.e., any regular number appended with a 'j'. The 'i' operator remains, but can be considered deprecated, as it is no longer needed.

Added more unit tests and the usual bug fixes.

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