Added option to modify the number of threads used in the reconstruction stage

Added option to cancel terms in outputs if they are already known

A subset of terms to reconstruct can now be specified in ReconstructEliminationSystems

Various bug fixes and improved error handling

Bug fixes in auto updater when internet connection is poor

Custom monomial order weight matrices can now be supplied by the user.

Improved error handling for when monomial orderings are invalid.

Fixed typos in tutorial.

Auto updater now displays changelog to user

Stability improvements

Changed FFDet to SPQRDet to avoid conflicts with FiniteFlow