Zadeh

Main changes:
- Better handling of the limit case in triangular and trapezoidal sets.
- New membership functions (spline-based, double gaussian).
- Support for multiple fuzzy conventions (or, and, defuzzification).
- New method to plot the rules
- Import Matlab models.
- Model tuning support.
- Automatic value generation for fuzzy variables.
- Minor improvements.

**Full Changelog**: https://github.com/Dih5/zadeh/compare/v0.2.0...v0.3.0

Main changes:
- New operators for easier syntax.
- Rule weighting.
- FIS save/load.
- Handling limit cases in piecewise functions with quotients.
- New sigmoid-based MF.
- Improved plotting.
- Improved docs.
- Flask-based model server.
- Matlab file parser (limited functionality).
- Experimental support for categorical domains.

Original prototype