Galacticraft-Legacy

Fixes

• catch null inventory (29126778)
• fluid in tanks lost after server reload (#109)
• (planets) prevent celestial map planet duplicates (b1ae3d8e)

Misc

• (style)
  • actually update the README... (83bb80dd)
  • reworked README (6c81f292)
  • fix typo on @ReplaceWith annotation (643684b9)
  • fix typo on Deprecated GCLog (cd556f3d)
  • import ordering changes (a57797b6)
• (revert)
  • commit 8137f7dc0 (16f79f55)
• (refactor)
  • remove generic type param (b04587bb)
  • remove throws in register method (d4c84382)
  • add CelestialCollector utility class (1363ebd5)
  • ignore cast exception on CreativeTab (c84bd478)
  • (api) minor fixes and Javadoc adjustments (261cd5f8)
  • misc changes to GalaxyRegistry (e3c11f7a)
  • update coremod config file (f1485b19)
  • remove isPlanetsLoaded checks (90d3a192)
  • (planets) don't render Earth & Sun on Venus (b222b259)
  • (api) catch IndexOutOfBounds on getDimensionTypeID(int) (b7db9b1d)
  • (api) remove GCItems class (73e8c988)
  • (api) make register return boolean value (65b9a030)
  • (compat) new compat utility class (617009f7)
  • (lang) remove [GC] prefixes (81c19403)