0.2.21

• API enhancements:

  • Add HashMap.lookupKey and HashSet.lookupElement
  • Add differenceWithKey
  • Add disjoint

• Performance improvements:

  • HashSet.fromList: Use unsafeInsert
  • Use tree-diffing for difference
  • Remove some unnecessary forcing of HashMaps
  • Remove the Array.index function
  • hashWithSalt: Ensure that the salt Int is unboxed

• Documentation changes:

  • Turn some comments into docstrings
  • Reword disclaimer regarding hash collision attacks
  • Update time complexity of some HashSet functions
  • Update instructions for code inspection

• Other changes:

  • Drop support for GHC < 8.10
  • Address deprecation warnings and other warnings
  • Optimize indexing in arrays of length 2
  • Introduce ShiftedHash
  • New "fine-grained" benchmarks
  • Make it compile with MicroHs. Thanks, @augustss!
  • Remove redundant Eq constraints
  • Refactor delete
  • difference[With]: Undo constraint relaxation