# kerntools 1.2.1

## Minor improvements and bug fixes

* 'Spectrum()' and 'aggregate_imp()' no longer rely on the defunct function 'dplyr::id()' (@DavisVaughan, #2).

# kerntools 1.2.0

## Major changes

* Two new kernels, 'Aitchison()' and 'cLinear()', for compositional data.
* A new kernel, 'Chi2()', for computing the chi-squared kernel for bags-of-words.
* New function, 'aggregate_imp()', that aggregates a table of features following a user-defined grouping criterion.

## Minor improvements and bug fixes

* 'plotImp()' now throws an error when the user requests more features than the actual 
number of features present in x. Also, problems when displaying the correct xlim are fixed.
* 'heatK()' allows the user to input a legend title. 
* 'KTA()' now only accepts binary variables for its parameter 'y'.

# kerntools 1.1.0

* New vignettes explaining in depth kernel PCA and the kernel functions implemented in this package.

* New example dataset ('soil') that contains bacterial counts.

# kerntools 1.0.2

* Fixed errors that arose during CRAN Package Check when using alternative BLAS/LAPACK implementations.

# kerntools 1.0.1

* Fixed some typos in the DESCRIPTION file and the 'Acc()' function.

# kerntools 1.0.0

* Initial CRAN submission.
