tree 17b917662e5a4ea3946ce4a4e01783abe3d480e3
parent e81051f63eaaabed14dd11217b562fd830d83e53
author martin f. krafft <madduck@madduck.net> 1373321824 +0200
committer martin f. krafft <madduck@madduck.net> 1374174860 +0200

Reimplement Applications as a subclass of Classes

Applications are like Classes an ordered set, so we inherit from Classes
and thus reuse the same, limited functionality.

The concept of negation requires to override extend() and append().
Since we would like Applications to keep a memory of negations they
embody, for instance for later merging (extending) into another list,
thereby removing elements, the negations are kept in a separate list.

Also, switch from nose to unittest.

Signed-off-by: martin f. krafft <madduck@madduck.net>