Changes in version 2.3.2                        

  - released: ???
  - added upperBound() algebra for missing values
  - added infer() function for Mamdani and implicative inference

                 Changes in version 2.3.1 (2025-12-16)                  

  - released: 2025-12-16
  - removed C++11 requirement as R already supports higher C++ standards
  - updated autoconfig files
  - polished documentation

                 Changes in version 2.3.0 (2025-06-27)                  

  - released: 2025-06-27
  - implemented str.fsets(), as_tibble.fsets()
  - removed dependency on the zoo package
  - added lowerBound() algebra for missing values

                 Changes in version 2.2.1 (2024-10-22)                  

  - released: 2024-10-22
  - implemented the experimental Center of Gravity defuzzification
    method (defuzz())
  - added "a few" and "several" fuzzy quantifiers to the quantifier()
    function

                 Changes in version 2.2.0 (2022-09-08)                  

  - released: 2022-09-08
  - added equidist(), equifreq()
  - added function to compute fuzzy-transform (ft()) and its inverse
    (ftinv())
  - parallel t-norms and t-conorms rewritten in C++

                 Changes in version 2.1.2 (2021-08-23)                  

  - released: 2021-08-23
  - added vignette

                 Changes in version 2.1.1 (2020-11-04)                  

  - released: 2020-11-04
  - fixed the minimum required version of R to 3.6

                 Changes in version 2.1.0 (2020-10-14)                  

  - released: 2020-10-15
  - the result of algebra() is now an S3 class, implemented
    print.algebra()
  - added involutive negation to algebra()$ni
  - added nelson(), lowerEst() handlers of NA for algebra()
  - added print() method for linguistic contexts
  - added negated=FALSE argument to the lingexpr() function
  - implemented bi-residuum of the dragonfly algebra
  - implemented order operation of the dragonfly and lowerEst algebras
  - added sugeno()
  - added fuzzy quantifiers
  - deprecated some arguments of the compose() function
  - removed deprecated functions: lcut3(), lcut5()

                 Changes in version 2.0.1 (2020-05-19)                  

  - released: 2020-05-19
  - added support for percentual quantifiers in compose()
  - documentation spell-check