Release 0.2.3

See release-notes file for a full list of changes.

For instructions how to install see the How-to on the README or choose one of the tutorials.

Please verify the PGP signatures (files ending in .asc) of the distributions which are signed using belcher's pubkey (fingerprint: 0A8B 038F 5E10 CC27 89BF CFFF EF73 4EA6 77F3 1129), the key can also be found here, here, here, here and here.