- Update to version 2.2.1
* Add Qt5 support.
* Add Pascal interface.
* Improve JavaScript interface.
* Add function AddRange(char dir, mreal v1, mreal v2) and extend
corresponding MGL commands '[xyzc]range'.
* Add 'hypot' function for known functions in formula parsing.
* Add style '~' to disable colorbar or axis labels. NOTE, axis
style '_' is obsolete and should be replaced by '~'.
* Change Aspect() if Ax=NAN. Now, Ay and Az set the ratio to
optimal aspect (not exact value as previously).
* Disable changes by View(),Zoom(),Perspective() for position
of Title(), Legend(), Colorbar().
* Partial support of perspective in CalcXYZ().
* Speed up PDE solving.
* Add complex versions of PDE, QO2d, QO3d.
* Correct filled background for Box() in curved coordinates.
* Allow nx=1 for Stem and Error.
* Bugfix for drawing single axis.
* Bugfix for missing options parsing for some of MGL commands.
* Bugfix for .pmin suffix in MGL. Add mglData::MaximalNeg() and
mglData::MinimalPos() functions. Add .nmin and .nmax suffixes.
* Bugfix for colorbar labels.
* Force using python 2.7 by default.
* Minor bugfixes and memory leaks.
- Disable Octave interface due to Octave 3.8.0 changes
- Disable openmp support due to instability (forwarded request 215573 from Dmitry_R)