Another round of battle engine fixes and misc. changes.

• The various 'Mark' unit upgrades are back. They were disabled quite a few cycles ago during an overhaul of the magic system. The effects/costs have been lifted directly from the previous iteration of these upgrades, so they do need some balancing. Lesser Marks become available at mastery level 2, Marks at level 5 and Greater Marks at level 9. Tooltips for masteries indicate which Marks have been added so far.
• Wizard Tower Expansion: Summoning Circle now requires Summoning 1 and Warding 1.
• Wizard Tower Upgrade: Tunnel Network now requires Earth 2.
• Wizard Tower Upgrade: Mystical Furnace now requires Fire 2 and Artifice 1.
• Wizard Tower Upgrade: Aviarium now requires Air 1 and Beasts 1.
• Wizard Tower Upgrade: Enchanted Fountain now requires Enchantment 1 and Water 1.
• Wizard Tower Upgrade: Voltaic Coils now requires Arcane 2, Artifice 2 and Air 1.
• Wizard Tower Upgrade: Enchanted Garden now requires Life 2.
• The army movement line on the map now has different colors for history (red) and planned (yellow).
• Battle Resolution: Charge impact can now cause loss of Effectiveness (organization/formation strength).
• Battle Resolution: Reduced the hit malus applied by low Effectiveness.
• Battle Resolution: Having higher Effectiviness than a melee opponent now gives a bonus to hit.
• Battle Resolution: Chance to break is now affected by duration of the battle and unit Effectivness, and a "wavering" result has been added which does not cause a retreat, but instead reduces Effectiveness.
• Battle Resolution: Increased the number of active combatants in melee when there is only one opposing unit, and neither unit is charging. Previously the number of active combatants was lower if 2 x 100-member units were in melee (ie 1v1), than if two
• New Summoning Mishap: Instead of always reducing unit size, there is now a 20% chance (if the unit does not already have a limited duration), that the unit will be unsummoned after 8 to 28 turns.
• New Clan Trait: Unpredictable. Relation impact of many diplomatic actions is modified by a random factor from -50% to +50%, with a 2% of completely reversing the impact.
• New Clan Trait: Unforgiving. The negative relation impact of diplomacy, war, etc. will fade 50% slower.
• New Clan Trait: Forgiving. The negative relation impact of diplomacy, war, etc. will fade 25% faster.
• New Clan Trait: Short Memories. The negative and positive relation impact of diplomacy, war, etc. will fade 25% faster.
• New Clan Trait: Trusting. The positive relation impact of many diplomatic actions will fade 25% slower.
• Fixed a crash bug in the battle window
• Fixed damage stats incorrectly showing 0 when swapping units in and out of reserver
• Initial deployment of reserves now respects any assignments made in the army window
• Increased variety of region and province names
• New Unit Type: Giant Crabs. Unlocked through research requiring Beasts 3 + Water 3 OR Beasts 3 + Tower Upgrade: Underground Waterways.
• Fixed Giant Scorpions missing their poison stinger attack. Increased their HP from 4 to 6, reduced default unit size from 100 to 50.
• Fixed a display issue with Fortresses in the context panel.
• Fixed a bug where the context panel would sometimes show cities not being razed as "Being Razed: 0%".
• There is now a tooltip on the character window Favored Follower toggle showing current favored followers, the maximum available, and the mechanics resulting in this value.
• Fixed a crash bug related to some demonic units.
• Fixed tooltips and descriptions for unit effects having one or more melee damage bonus components not showing damage type.
• Rivers can now be deleted in the Map Editor.
• Hint text is now shown when editing Rivers in the Map Editor as the controls are not entirely intuitive.