v0.25: Support for color-blind users and many other small improvements.

- Color schemes have been added to support color-blind users.
- Unipolar and bipolar stepper motors were added.
- Moved the "lib" folder from the "examples" folder to the root folder.
  - In case you have added your own library circuits, you have to move
    them manually as well.
- Reordering of the cells in the K-Map.
- Counters are able to act as program counters via the remote interface.
- The circuits created have a more visible separation of the inputs.
- The hex seven seg display is switched off in case of a high-z input.
- A Stop component was added.
- Improved test case parser. Now the test case is able to react on the
  circuit's state.
- 7482, 74193 and 744017 were added
- Breaking changes:
  - The layout shape uses a slightly different algorithm to determine
    the pin positions. You may need to adjust usages of embedded circuits
    that use the layout shape.
  - The CommandLineTester has moved! Tests are now executed like this:
    java -cp Digital.jar CLI test [file to test]
       [-tests [optional file with test cases]]
  - Text formatting was reworked. Disable formatting with a '\' in the
    beginning does not longer work. Use "\_" to escape a underscore.