0.3.0 Aug 9:
  o Give a return code for bare usernames too. Closes: #3405
  o Adapt to Soledad 0.2.1 API.
  o Fix broken pip install
  o Fix alias lookup return codes. Closes: #3356
  o Use the new API to import a new ascii armored public key. Fixes
    #3352.
  o Add "incoming" index for ease of listing new email.
  o Add dependency for leap.keymanager.
  o Adapt to the new keymanager API. Closes #3397.