# ecr 2.2.1

## Fixes

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

# ecr 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

# ecr 2.1.1

## 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

# ecr 2.1.0

## 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

# ecr 2.0.0

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