Added the new function R_to_axis_angle().
The Euler angles are now wrapped between 0 and 2pi.
Missing import.
Partly reverted r9167 - the previous reversion.
The command used was: svn merge -r9167:9166 maths_fns/frame_order_models.py
Partly reverted r9167 - the previous revision.
The command used was: svn merge -r9167:9166 maths_fns/frame_order_matrix_ops.py
This returns the cone axis.
The command used was: svn merge -r9167:9166 generic_fns/monte_carlo.py
Return of the cone axis, and rotation of the reduced tensor.
The cone axis is back, and better support for the Euler angles.
Renamed theta to theta cone (again due to the reversion).