Thanks for mentioning this! I was a GC user for quite a while on linux, but the register rendering (fonts) was so bad on macOS I abandoned it, checking back for updates every so often. Looks like this is better now.
FWIW: I just tried the 3.0-1 macOS version and it crashed when trying to configure/save. The save dialog was non-native and seemed to have some weird "offset" where clicking the mouse would select a folder/file not under my cursor, but offset by like 50px.