Removed unused fields.
Changed GridLayout for BoxLayout. Now it looks more sensible.
Changed name of flag and added a similar flag for attackers.

Remember that now the attack die is set by a combobox, so there is no
way to add the wild die... unless you say that there must be one. This
is what the latter flag is about.
Refactored wild-card-selection panel to make it a component that can
be used for the attacker too.

The goal is to make it self-contained instead of modifying some other
field of the container frame.
Integrated old method that created the radiobuttons into the new inner
class so it is completely self-contained.
Minor edits.

Added main method for easier development.

Removed commented code.
Removed commented code.
Combined combobox with label.

Not only it is clearer with the explaining text, being enclosed in
their own panel means the combobox is not stretched absurdily by the
layout manager.
Added some doc.
Added wild die for WC attackers.
The syntax was not properly defined plus it was incorrect. FIXED.
Removed obsolete TODO comment.
Removed obsolete comment.
Refactored inner class into first-order class. This is a step toward
extracting all the logic from the frames, leaving them as pure view.
Removed inner class from frame and used new equivalent class.
First steps towards externalising the SaWo logic from the SaWoFrame.
Minor changes:
  - method name changed
  - println text changed
First step towards running all different types of attacks.
Added map in order to store results for more than one option.
Added several options for wild attack and aiming to the head, plus the
logic for making wound with a double shaken.

None of this is used yet.