Removed chance that dead vikings become Zombies until wave 7. Increased that chance to 7.5%

Defense Tower now requires upgraded Forge before construction .

**This Change has been reverted to an increased cost for the Defense Tower.**

Slight increase to difficulty, removed problematic colliders

Increased difficulty and balancing update

Tweaking chance that dead vikings turn to Draugr

Removed building restriction for Forge, which would cause Smiths to idle if Mine had been removed.

Attempted fix for Frequent Crashes

Huge Feature and Balance Overhaul!

- Added 8 new waves and rebalanced older waves
- Increased Frequecy of undead waves (reduces snowball after a great defense)
- Increased spawn rate of Adventurers (reduces likelihood of getting wiped after a poor defense)
- Trading Caravan is no longer replaced by Food Trade. Increases allegiance with neutral factions by +75%. (increases viability of building towards Blainn)
- Removed Jottun Adventurer mechanic (Jottun attack your human adventurers, need to tweak before adding this feature)
- Normalized speed of undead units (decreases chance that faster units are bursted down before slower units arrive)
- Fixed poorly scripted Adventurer spawn mechanic (special thanks to SanctusSusanin!)
- Changed Forge Building requirement to Quarry
- Removed Blood Moon Event (can cause crashing)
- Players now spawn with 2 sheep, and receive only 1 from Fame bonus (increases viability of Sheepfold over Fields at game start)
- Added horn sound effect to signal incoming waves