#104. added structures / wrappers to all of the spider tank state settings to allow for different, modifiable values for each health checkpoint.

TO DO
RushState needs to be re-worked to allow for different settings in each health checkpoint.
Configure when health checkpoints should be triggered.
#104. All boss state settings can now be configured individually per health checkpoint.

TO DO:
Allow for health checkpoints to be defined in the inspector.
#104. The boss now changes its phase when its health drops below the nearest checkpoint. With the phase variable being changed, all state behaviors acquire the settings to the current phase. All boss behaviors are automatically updated without having to write any additional code. Furthermore, the boss' max health is now locked to the health checkpoint.
#104. Fixed bugs. Everything seems good to go.
Re-Serialize Assets
Merge branch 'master' into health_checkpoints

Conflicts:
	Assets/Prefabs/Bosses/Spider Tank.prefab
	Assets/Prefabs/Level Manager.prefab
	Assets/Scripts/BossBehaviors/SpiderTank.cs
	Assets/Scripts/BossBehaviors/SpiderTankStates/SpiderTankMortarState.cs
	Assets/Scripts/BossBehaviors/SpiderTankStates/SpiderTankState.cs

Various fixes to get things working again after the merge.
Merge pull request #123 from ModSquadWorkshop/health_checkpoints

Health Checkpoints