Patch Notes [GamezBD] 03/05/2018

Code:

- Fixed items with amity price buy\sell operations in npc shops
- Fixed Valtarra monsters not display for instance owner
- Implemented all Valtarra Training types
- Fixed fall damage detection
- Implemented fishing with harpoon
- Fixed enemy detection for players and summons in RBF area
- Corrected enter\leave members logic for boss parties (example: Disco bosses)
- Implemented correct summon teleportation/spawn location calculation (ex: Striker Echo Spirit)
- Greatly improved monster AI system to more retail-like model