I have just pushed Build 152 to Google Play. This build includes one bug fix (the in-app help wasn't working), and the following two additiions:
1) I now support PHONEBOOK GROUPS
2) You can now make a call from the Phonebook list
This build SHOULD be available sometime on Tuesday afternoon, though on odd occasions the app is held back for a full evaluation by Google, and that can take days. However, that happened on Build 150, and so I don't think it will happen this time.