MathGL Code

Bugfix for using dashing in hex color with 'd'

Add HistL() for histogram by linear interpolation; Add operators for mglDataC; Start adding multi-fontface features (not finished)

Update fonts and set STIX2 (STIXTwo) font as default. Add CJK fonts. Note, changes are not well tested -- you can use old STIX in the case of any problems

Bugfix in make_font for correct numbers in wire font

Changes in config files

MathGL: some optimizations to Qt rework and fixes to JSON compile.

MathGL: some fixes to Qt rework.

MathGl: selecting, using and searching for various Qt versions reworked.

Fix and speed up sinfft and cosfft for complex numbers

Fix sinfft to be in the standard form (i.e. without zero values at edges)