Changes in version 2023-08-13                      

  - Planned release

                     Changes in version 2019-11-07                      

  - Add argument frgb to change internal rgb composition

                     Changes in version 2018-04-17                      

  - Add argument colorRampPalette to return this function

                     Changes in version 2018-03-09                      

  - Fix documentation

                     Changes in version 2018-03-06                      

  - Fix documentation
  - Included lucky function!

                     Changes in version 2018-02-23                      

  - Incorporated 7140 colour gradients cpt-city_2.19-1
    http://soliton.vm.bytemark.co.uk/pub/cpt-city/pkg/
  - Only two gradients were not incorporated:
    http://soliton.vm.bytemark.co.uk/pub/cpt-city/gmt/tn/GMT_cyclic.png.index.html
    http://soliton.vm.bytemark.co.uk/pub/cpt-city/jjg/hatch/tn/diag5.png.index.html
  - Added the function find_cpt.
  - Renamed the existing gradients to the new names, for instance,
    "inferno" is now "mpl_inferno".
  - Added a dataset with the names of the colour gradients.

                     Changes in version 2018-02-16                      

  - Adding 4 gradients
  - cptcity renamed as cpt which nows is a function

                     Changes in version 2018-02-06                      

  - release including 4 gradients