Mass update fails silently if one installation fails

Currently, i have to manually ignore updates for apps not in the google play store or using a different signing key, otherwise aurora tries to update them when selecting 'Update all' (also when manually selecting them for update, but this is as expected). This sometimes creates confusing notifications (Apps showing as updating, while the app is neither downloading nor installing) and seemingly always blocks the other apps from updating.
Effected are e.g. vendor specific apps, my own unpublished apps in ongoing development, apps removed from the play store, or paid apps installed from other stores.
Expected behavior would be to simply ignore paid apps while using a throwaway account, or even better checking if they have been purchased with the current account. Apps not available in the store should always be ignored.
The issues #360 (closed) and #388 (closed) might be related.