Summary of changes between Frotz 2.51 and Frotz 2.52: ===================================================== Frotz 2.52 was released on Sunday May 10, 2020. This is a minor release focusing on minor enhancements and bug fixes. NEW FEATURES - Partial support for new @set_true_colour opcode. Works for SDL. Doesn't work all the way for curses. Not in scope for dumb interface. BUG FIXES - Reworked Makefiles to better handle library detection, particularly for macOS. - Fixed rendering of non-paletted PNG images. Affected only non-Infocom V6 games. - Rolled back idiosyncrasy fix for Cutthroats and changed over to the quick-and-dirty 24-to-12 conversion used by Infocom as this is how the Imps expected an interpreter to behave. - Fixed broken handling of game paths set in environmental variables and in config files. - Fixed slightly broken parsing of .sfrotzrc. - Fixed behavior of command line processing inconsistent between the different user interfaces. - Assorted source code formatting fixes.