v0.4.0

What's Changed

🚀 Features and Improvements

• [breaking] Some rearranging of serialize/deserialize code (#230) @Rua
• [breaking] Extract canon from registry (#221) @alyjak
• [breaking] Add Resources to CommandBuffer::exec_mut and ::flush (#214) @Rua
• Allow Queries to be requested as parameters in #[system] (#237) @TomGillen
• Use NonZeroU64 to store entity IDs (#238) @Rua
• Removing derivative from dependencies (#232) @lain-dono
• Fetching a nonexistent resource prints the name of a type (#231) @LokiVKlokeNaAndoke
• Implement Debug for Schedule, Executor and other subtypes (#213) @Rua
• adds EntityFilterTuple to the public API (#222) @alyjak
• Adds CustomEntitySerializer to the public API (#220) @alyjak
• Re-export FetchMut from systems (#209) @Veykril
• A few minor optimizations to LocationMap (#206) @mjhostet
• Better error message when fetching nonexistent resources (#210) @Rua
• Show appropriate error position on invalid macro usage (#208) @tyfkda

🐛 Bug Fixes

• Fix parallel chunk iterator using entire index instead of split slice (#240) @TomGillen
• Fix broken links in docs & readme.md (#236) @FluffyCreature
• allow read in both subworlds within split in system (#235) @ezpuzz
• Use a drop guard to prevent leaving a dangling reference in internals::serialize::id::run_as_context (#203) @autumnontape

🧰 Maintenance

• synchronize CI functions with Amethyst (#233) @ezpuzz
• Use write_u64 to special-case hashing 64 bit values (#204) @mjhostet