relax SVN archive

Created the Grace graphs for the free rotor pseudo-ellipse model 1st degree frame order matrix.

These are the values calculated directly from the lib.frame_order modules. The graphs were
previously all zeros.

Small numerical changes for the pseudo-ellipse 2nd degree frame order matrix graphs.

These are only for the first point close to zero and the changes are minimal, caused by the recent
simplifications of the code.

Simplifications of pseudo-ellipse 1st degree frame order matrix functions.

The xx, yy, and zz have been renamed to 00, 11, and 22 for consistency. And all sigma_max arguments
have been dropped as they are not used.

Removal of many repetitive calculations in the pseudo-ellipse 2nd degree frame order matrix equations.

Integer to float conversions in part_int_daeg2_pseudo_ellipse_13().

This avoid integer to float conversion during execution, saving a little time for the pseudo-ellipse
2nd degree frame order matrix compilation.

More simplifications of the pseudo-ellipse 2nd degree frame order matrix equations.

Simplification of some of the pseudo-ellipse 2nd degree frame order matrix equations.

Alphabetical ordering of methods in the frame order matrix element simulation script.

Simplifications for the inside_*() methods of the frame order matrix element simulation script.

The limit() method is now called only once outside of these methods and the maximum cone half-angles
passed into the inside_*() methods. Although only slightly faster, this is mainly to simplify the
code.

Added the isotropic cone model to the frame order matrix element simulation script.

The generated in-frame and out-of-frame Grace graphs for the torsion angle cone_sigma_max,
containing the matrix values for 1,000,000 simulation values have been added to the repository. The
inside_iso_cone() method has been created to check for the theta_x and theta_z angle violations from
the rotation_hypersphere() method.