Changes in version 0.0.6 (2025-07-25)                  

  - S3 method consistency with ggplot2 (v=4.0.0) (2025-06-21, Sat, #4)
  - nk() for choose k (number of clusters) (2023-03-17, Fri)
      - output is a silinfo object with print(), summary() and
        autoplot() methods

                 Changes in version 0.0.5 (2023-03-08)                  

  - autoplot method for SingleCellExperiment object (2022-11-01, Tue)

                 Changes in version 0.0.4 (2022-03-16)                  

  - added available_methods() to show available DR methods (2022-3-15,
    Tue)
  - update dr_extract to support methods work for distance objects
    (2022-3-14, Mon)
      - uwot::umap()
      - uwot::tumap()
      - uwot::lvish()
  - fixed the error: mapping is missing with no default (2022-3-14, Mon)

                 Changes in version 0.0.3 (2021-12-08)                  

  - update Rd files with return value (2021-12-08, Wed)
  - use theme_minimal() as base theme in theme_dr() (2021-12-07, Tue)

                        Changes in version 0.0.2                        

  - add vignette (2021-12-07, Tue)
  - print() method for DrResult
  - support metadata in fortify(), ggplot() and autoplot()
  - update dr_extract to support methods work for distance objects
    (2021-12-5, Sun)
      - stats::cmdscale
      - MASS::sammon
      - vegan::metaMDS
      - ape::pcoa
      - smacof::mds
      - vegan::wcmdscale
      - ecodist::pco
      - labdsv::pco
      - ade4::dudi.pco
  - add new slots eigenvalue and stress to the DrResult class

                        Changes in version 0.0.1                        

  - theme_dr() that add shorten version of x and y axis
  - theme_noaxis() to remove axis elements
  - autoplot() to plot dr() output
  - extend ggplot() to support dr() output
  - dr() to unify dimension reduction result
      - supports stats::prcomp and Rtsne::Rtsne
  - DrResult class
      - data: original data
      - drdata: Dr result, i.e., point coordinations
      - .call: function call