Finally an update with game content :)

- Added Paladin class.
- Added skills: Mace, Blessed Hammer, Faith, Aura of Purity, Sunder, Holy Bolt.
- Implemented Holy Damage effects.
- Changed `Longinus Spear` to be Holy damage instead of Dark.
- Added Dark Damage special properties.
- Added tips at the start of every game.
- Fixed 'back' button not clickable in start game menu bug.
- Made the `Drowned Pirate` accessible by killing skeletons. The `Human Sacrifice` will be used for something else..
- Resistance / Armor mechanism overhaul to make weaknesses work more properly.
- Increased `Rogue` Special Ability mana cost to 3.
- Added `Sunder` skill to `Knight`, `Monk` (instead of `Axe`) and `Thor`.
- Small graphics improvements.

Also if you're enjoying the game, please take 5 minutes to rate it. That would be very helpful.

Thanks!