Changes in version 0.2.1 (2022-12-16)                  

  - The LodePNG library has been updated to version 20221108.
  - The package no longer calls the sprintf C function, which produces a
    warning on some platforms.
  - Other small warnings and notes have been addressed.

                 Changes in version 0.2.0 (2018-06-15)                  

  - The new inspectPng function can be used to obtain details of a PNG
    file without obtaining the pixel data.
  - There is now a print method for objects of class "loder".
  - The writePng function now supports writing interlaced files, and
    offers different compression levels.
  - Text chunks are now read from and written to PNG files.
  - The LodePNG library has been updated.

                 Changes in version 0.1.2 (2017-05-30)                  

  - The package should now compile against versions of R prior to 3.3.0.
  - Some low-level memory protection and undefined behaviour warnings
    have been resolved.

                        Changes in version 0.1.1                        

  - File arguments to readPng and writePng are now passed through
    path.expand, so that paths containing a tilde (~) will be handled
    properly.

                 Changes in version 0.1.0 (2017-05-05)                  

  - First public release.