CNApy 1.2.9

This release contains the first step of integrating th HiGHS solver into CNApy, with fast FVAs as a first option.
Also, a multitude of bug fixes in thermodynamic calculations and Escher views were implemented.

What's Changed

• fix calling Escher zoom via menu/toolbar by @axelvonkamp in #566
• multi-threaded FVA using highspy by @axelvonkamp in #568
• V129 by @Paulocracy in #567

Full Changelog: v1.2.8...v1.2.9