Many fixes and the re-implementation of giant trees in the green hills biome (more Beautiful than ever).

Changelog:

• More hints added to the tutorial (Hope it helps to new players).

• The message when learning stats/spells has been highlighted so it would be harded to miss it out.

• Improved slope behaviour of Levi.

• A carryable object bug fixed.

• Horses has better behaviour.

• Camera behaviour improved to feel more responsive.

• And a lot of little adjustments to the world.