* directly hooked into the internal BDD-primitive functions
* has worse performance than the approach without the primitive functions
* foreseeable for easy problems
* surprise for more complex problems, because recursion can be
escaped much earlier
* ADD the default-feature "variablelist" to have a compile-flag to either
enable or disable this feature.
* updated rust to the current version
Implemented various optimisations of the 0.2.0 version, including different filtering and rewriting approaches for model enumerations
* ADD prefilter for stable model computation (hybrid and naive)
* ADD implementation with one big rewritten formula instead of many
* ADD second version of bdd rewriting method
* FIX documentation, UPD flake
* UPD Readme, usage
* ADD hybrid options for grounded and transformation
