Version 0.2.0 - Rare Tower and Rare Map

1. Add 12 new rare towers, each can upgrade to level 9,
2. Add some new quests, collect gems, and gain Upgraded Uncommon tech (allow Upgraded uncommon tower to level 9).
3. Ad Item Giant Monster Crystal, Giant Monster level 100+ have a small change to drop. Increase lucky also increase drop rate. This item is use no open 4 new maps.
4. Add new 4 maps :
- Volcano: you get fire damage and burn over time, please buy some Cold Potions from the market.
- Snow Mountain: you get ice damage and frozen points over time, please buy some Warm Potions from the market.
- Thunder Mountain: you may be struck by thunder, please buy Electric Resistance Ring from the market.
- Dead Forest: you get poison damage over time, please buy some Antidote from the market.
** These maps have a limit time.
5. Add many new resources :
- Volcano: Titan Ore, Gem, Fire Crystal, Iron Crystal, Copper Crystal.
- Snow Mountain: Titan Ore, Gem, Ice Crystal, Silver Crystal, Iron Crystal.
- Thunder Mountain: Hard Marble, Gem, Electric Crystal, Gold Crystal, Copper Crystal.
- Dead Forest: Hard Wood, Iron Wood, Poison Crystal, Green Crystal.