Created base sprite images for the Triangle Miser boss.
The Triangle Miser now throws Scalene Edges at a set interval. The swords remove themselves after they have traveled a specified distance without touching anything.
The player is now hit and damaged by flying Scalene Edges if they collide.
Scalene Edges can now be reflected back at the Triangle Miser by swinging the sword at them.
Added launch delay to Scalene Edges. Launch delay and sword throwing rate now vary based on the Triangle Miser's health.
Merge branch 'feature/boss-battle' into develop