Provide a different way for creating library shortcuts on Launcher homescreens.
At present the "Create Shortcut" option does not appear to work with the Nova and Regina launchers (at least).
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Try Lightening Launcher... its crazy customisable... should be stock for android
Certainly with the Nova launcher this was an issue with that launcher which is now fixed. :-)
Further testing appears to indicate that the problem at least with the Nova launcher was caused by a recent update to that launcher. Therefore there does not appear to be anything that Memento needs to do. :-)