Tweaked the trigger for checking what council position, if any, a belligerent vassal is to make it into a triggered_effect so as to be easier to mod later.

Refusing Martial Service now prohibits a vassal from being a Marshal.

Realized that I had used "NOT" instead of "NAND" in the "can_command_troops" rule - commanding/not commanding troops should work as expected, now.

-Moved the broad filtering of vassals to the initial on_action rather than the event that is triggered when war starts, to hopefully cut down on some processing/unnecessary checks.
-Fixed a syntax error in the validity check that I have recently added to the withhold decision

-Added a check to the decision to withhold levies event to make sure that it's still a valid decision to make when it's presented to the vassal
-Added time-limits to the character flags that are added at some points in the script so that if, for whatever reason, they aren't handled by the script, they're eventually automatically removed
-Added the removal of character flags to the scripted_effect that resets the contract back to its default state

Fixed some syntax errors that were making some bits of information in the decision to withhold levies event not display properly.

Adjusted the logic so that vassals are only asked once per war if they want to reduce their levy obligations. Vassals won't be asked again unless their liege becomes involved in another war, or, if the vassal at some point refuse levies entirely but bumps back up to the threshold where they qualify for the option, again, of only withholding some levies.

Fixed minor issue in joining war as an ally

- Removed the included AGOT patch and made it into its own separate mod to supplement this one
- Changed instances in the script where the reduced levy effect occurs (other than when imprisoned) to also remove the reduction in Martial Service (just in case, in the future, there needs to be a clean-up of that).

Successfully figured out how to add a thumbnail to the mod - huzzah, haha