Minor combat refinement

• Inanimate object carried while running takes some damage each time you ram it into an enemy or object. Prevents infinite running attack (since it is not alive to break your grab)
• Fix shield guy’s guard aura pointing in odd directions when counterattacking (after guarding a certain number of hits)
• Improve handling of player losing grabbed enemy
  • Return to idle if it was knocked away by friendly attack e.g. fireball
  • Grab-broken state if snatched away by enemy
• Player’s running jump into a wall no longer wall-slams her
• Try to fix rare bug where an enemy becomes immune to strikes