Release v0.13.0 (2017-12-28)

Bug Fixes

• POST commands to avoid cache issues (64823f4)
• sometimes the IPFS server does not JSON encode an error (57f1939)
• pass the directory size along (b1e588b)
• subscribe now stops immediately when it is cancelled (6c9474d)

Features

• remove a key (8594d94)
• generate a key (eae333d)
• list keys (aa62982)