I just uploaded a new version and it may break some plugins. Most are already fixed so you only need to open the Plugin Manager and restart Glyphs. And reinstall the python modules from preferences, as those where updated, too.
Please report any plugin that sill doesn't work. You should see some red text in the macro window.
in almost all cases, it is enough to have this two lines to the top of the plugin file:
from GlyphsApp import *
from GlyphsApp.plugins import *
And remove any mentioning of
from Foundation import *
from AppKit import *
from your code.