This release:
- adds support for Macintosh drive images, in addition to its existing support for volume images;
- substantially improves messaging and semantics around ROM loading, hopefully to ease application setup;
- accepts state snapshots by drag and drop, in addition to regular media images;
- adds a square-pixel option for Apple II emulation, following verification that some monitors were so configured; and
- corrects a potential inconsistency in the Master System's handling of interrupts.