v3.1

M-M.E.S.S. 3.1: Bug fixes and usability improvements

Added

• mess_root function to find the root directory of the installation.

Changed

• mess_version now has an optional argument that suppresses verbose
  printing of version information, when only the return value is
  desired.
• mess_column_compression now skips the actual compression if the
  tolerance is set to 0.
• mess_lrradi has improved LDL_T support.
• mess_lrradi now allows setting the initial residual from the
  outside, in order to (re-)start it from a non-zero initial guess for
  the solution.
• mess_res2_norms's argument resopts now behaves as documented.
  The old (and undocumented) use remains supported, but prints a warning.

Fixed

• mess_path now uses mess_root to properly determine the root path
  and set the relative paths. This allows to call mess_path from
  outside the M-M.E.S.S. tree and still get the correct result.
• BDF codes had an issue when Q, R were not present in LDL_T mode.
• Low-rank Riccati norm computations should be more numerically stable
  now.
• Logger functions now pass the correct string argument to MATLAB's
  error function, when an illegal log location is requested.
• mess_assert was not passing arguments properly to mess_err.
• Corrected a typo that could lead to trunc_tol being unset in
  mess_KSM.
• Corrected an error in mess_lrradi to make opts.radi.compute_res
  behave as documented.