Implement ruleset edge cases

• Endurance to Ini - talk to bjoern Moved to #18
• correct crits
  • crit is 1/10 of value, not simply 1
  • crits add +10 to degrees of success
  • botch is 20 and 19-20 if value <= 4
    • exploding dice rules for botches are: additional throw for each 20 in value wontdo, players should do this manually
• armor (decrease Degree of success by armor value) implement in #12
• dmg bonus only on melee (full) and thrown weapons (half, round down)
• add range to weapons