This file documents the significant user-visible changes in each release of the loder R package.

loder 0.2.1

• 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.

loder 0.2.0

• 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.

loder 0.1.2

• 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.

loder 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.

loder 0.1.0

• First public release.