Milestone 0.1.4

1st NIPY Beta Release (Fifth 0.1 developer's snapshot)

• simplify developer installation
  • improve installation instructions (see #81, #82)
  • freeze external dependencies
    • numpy >= 1.0.0
    • scipy >= ??
      • scipy.sandbox.models -> scipy.models (see #49)
  • python setup.py install
  • improve test system (see #60)
    • we should also talk to Fernando about integrating his doctest extensions
• improve developer documentation
  • clean up wiki (see #4)
  • tutorial (see #57)
  • api documentation (see #86)
• improve image formats support (#37, #55)
• clean up (see #76)
• squash bugs (see #31)