Fixed inaccurate salve amulets boost, bonus for enchanted version now implemented
Fixed inaccurate black/slayer mask + slayer cape interaction, now always gives the highest bonus when wearing mask + cape
Unified kotlin and java into just src/main
Unified the rs09 and core packages
Took all content out of the core package, and placed it into the new content package
Reorganised all source code relating to content to be easier to find and explore