x20

Build 20
Now use middle names in display name to better match user’s contact
names.
Now clear favorite caller at startup if they have been deleted from
address book, and don’t error if they are deleted from Favorites list
manually.
Added support for linked contacts, so you will no longer see double
entries for callers in picker or favorites list after adding all
contacts.
Now Clear All Favorites and Add All Contacts work in background so
ActionSheet isn’t frozen on screen waiting for them to finish.
Fixed bug where Index titles are displayed for wrong sections if you
had a section (i.e. E) with no contacts.
Fixed bug where clearing favorites wasn’t written to disk, so
restarting app still had displayed favorites list.