Changes in version 2.2.1                        

Fixes

  - Fixed warnings raised by r-devel versions
  - Fixed typo in the docs of approximateRefSets yielding the function
    not being exported

                        Changes in version 2.2.0                        

Fixes

  - Fixed bug in mutPolynomial where parameter lower was sanity-checked
    twice and upper not at all
  - Fixed some typos in function documentations
  - Fixed bug in updateParetoArchive: optimization direction, e.g.,
    minimize first, maximize second objective are now respected

Added

  - More literature references in documentation

New features

  - Performance assessment for stochastic multi-objective optimization
    algorithms (very powerful tool)
      - Flexible scatterplots in 2D and 3D
      - Function to calculate a set of unary and binary performance
        indicators for a set of problems and algorithms
      - Function to visualize indicator distrbutions
      - Functions to perform statistical tests and output results as
        well-formatted LaTeX tables
  - Exported helper functions getNumberOfChildren,
    getNumberOfParentsNeededForMating and generatesMultipleChildren

                 Changes in version 2.1.1 (2023-03-08)                  

Fixes

  - Fixed: bug in replaceMuCommaLambda if n.elite was not set by hand
  - Fixed: selGreedy throws error if n.select is larger than the number
    of individuals passed (this led to hard-to-detect errors in (mu,
    lambda) strategies and white-box approach)

New Features

  - Added terminator stopOnMaxTime

                 Changes in version 2.1.0 (2017-07-10)                  

New Features

  - uniform crossover recombinator recUnifCrossover
  - parameter log.stats for ecr function (possibility to define fitness
    statistics to be logged)
  - logical log.pop argument for ecr function (should each population be
    saved in the logger?)
  - possibility to store additional stuff in logger via 'extras'
  - terminators stopOnEvals and stopOnOptY

                 Changes in version 2.0.0 (2017-04-26)                  

  - First submission of ecr 2 to CRAN.
  - Almost everything changed.