Patch notes 2.8.2: Fix broken mechanics

This patch repairs mechanics that never worked as intended. Some buffs, some nerfs.

Combat

• Bash only knocks down if you win the strength contest. Skill and size matter more: bosses don't always fall, big mobs don't always floor you.
• Hits over 10% of your HP delay your next spell/song/skill (0.5–3s).
• Unarmed monsters crit with their own level and hide.
• Running now makes you faster.
• Meditate never lowers mana regen.
• Pet cure-poison talents now trigger.

Magic & items

• Blindness works on enemies, and on you (willpower save).
• Cone spells keep their damage at high power.
• Psychic armor raises your willpower save.
• Coated weapons, arrows and flasks affect the target (holy water burns undead).
• Trap damage scales per victim, and poison traps actually poison.
• Chrysalis no longer eats underfilled items.
• Item spells lost a hidden attack-speed bonus (Zeraphin's Celerity I keeps it).
• Weapon, shield, spellbook and crash fixes.

Epic dungeons

• Magic resistance depends on monster type (warriors, thieves, rangers are easier).
• Druid monsters summon bears and faeries, and can slow you.

Stealth & language

• Looking only reveals hidden creatures on a successful spot roll. point reveals them to everyone.
• Search finds hidden creatures even on an empty floor.
• Only Elvish speakers understand Elvish. Use speak common.

Guilds, arena & gold

• Leaving a guild no longer teleports you. Use guilds defect instead of outcasting yourself.
• Arena: leaving returns you to where you joined, and you can't join mid-fight.
• Splitting gold no longer duplicates it.