Use Libertine or Biolinum Greek glyphs in mathematics
Description
This package allows LaTeX users (especially if using
traditional LaTeX/pdfLaTeX) to set the Greek letters in math
mode to use the glyphs from the Libertinus Serif or Sans font,
via the font support files provided by the libertinus-type1
package of Bob Tennent. All Greek letters are defined both in
\...up and \...it variants. The style (ISO, TeX, or French i.
e. upright) can be modified midway in the document. A "legacy"
mode uses font support from the (obsolete) package
https://ctan.org/pkg/libertine-legacy which map to the Linux
Libertine or Biolinum fonts. This package is for users which
only want to customize Greek letters in math mode.
