With 0.8.2, a large part of the application's backend has been rewritten, mostly thanks to @Sauyon joining the project. Expect it to perform better and crash less.
There are two changes in this version that you may want to be aware of though:
Navigate to "~/Library/Preferences/" (Open a Finder window, press Shift+Cmd+G, copypaste that and press Enter), rename
Open the Registry Editor (Press Win+R, type "regedit", press Enter), navigate down to
HKEY_CURRENT_USER\Software\MacaroniCode and rename the
MacaroniCode node to
~/.config/ (your file manager should have a way to jump to a given path), and rename the
MacaroniCode directory to
KanColleTool. Alternatively, run
mv ~/.config/MacaroniCode/ ~/.config/KanColleTool/ in a terminal.