Beta 4 Released!

Changelog:

Bugs
- Looking tile char x is now consistent everywhere
- Javelin had a double strength bonus before
- Giving Giladir a potion of healing now truly removes only one healing potion from inventory
- Mimic AI should work properly

General
- New leveling system: player gets 2 attribute raises but each stat is limited to 10 without bonuses
- New attribute: Wisdom; used instead of Intelligence in cleric's spell damage calculation
- New attribute: Constitution; used with damage reduction from physical attacks
- New attribute: Charisma; used with shop prices when selling and buying and paladin's smite   
- Help displays now explanations for ascii symbols
- Player can now target melee talents / spells only within 1 tile radius from the player
- Poison damage is consistent while resting for multiple turns
- Improved character sheet

Items
- Sell values adjusted for some items
- New wisdom potion reward, wisdom amulet
- New charisma potion reward, charisma amulet
- New constitution potion reward, constitution amulet

Spells and talents
- Paladin's Shield Wall renamed to Holy Shield to make it more Paladin'ish
- Turn Undead uses now player level as a damage bonus instead of Intelligence

Monsters
- Venom spitter snakes are immune to poison now
- Monster experiences revised, players should get to level 9 around the last few floors of the hell
- General balancing