0.2.20.1

• Fix infinite loop in isSubmapOf[By] / isSubsetOf on 32-bit platforms.
  To fix this bug and potentially other similar bugs, we return to a branching factor of 16 on 32-bit platforms.

• Relax bounds for GHC 9.12

• Require hashable >= 1.4

• Documentation changes:

  • Fix documentation about branching factor in Data.HashMap.Strict
  • Improve documentation for Data.HashMap.compose
  • Fixes docs of Data.HashMap.Lazy.fromList: it takes O(n * log(n))
  • Add disclaimer to Data.HashSet.toList

• Remove bad isSubmapOf testcase

0.2.19.1

• Fix bug in intersection[With[Key]]

• Improve docs of bit twiddling functions

0.2.19.0

• Make intersections much faster

• Fix undefined behaviour on 32-bit platforms

• Speed up some array-appending operations: #407, #409

• Use MathJax format for complexity annotations

0.2.18.0

• Fix strictness properties of Strict.mapMaybe[WithKey]

• Fix strictness properties of Strict.alterFEager

• Fix space leaks in union[With[Key]]

• Fix space leak in Lazy.fromListWith

• Speed up difference* and intersection* with unsafeInsert

• unionArrayBy: Find next 1-bits with countTrailingZeros

  • This speeds up union* for sparsely filled nodes, while penalizing union operations on densely filled nodes.

• Reduce reboxing in internal array operations

• Reduce code size of array operations in union*

0.2.17.0

• Define dataCast1 for HashMap

• Add Lift instances for Template Haskell

• Add definitions for stimes

• Expose internal constructors for HashSet, Array and MArray

• Tweak internal Array.insertM function

• Drop support for GHC 8.0

• Drop support for hashable < 1.2.5

• Various cleanup and documentation improvements

0.2.16.0

• Increase maximum branching factor from 16 to 32

• Tweak union.goDifferentHash

• Fix debug mode bounds check in cloneM

• Remove some old internal compatibility code

0.2.15.0

• Add security advisory regarding hash collision attacks

• Add support for hashable 1.4

• Drop support for GHC < 8

0.2.14.0

• Add HashMap.mapKeys. Thanks, Marco Perone!

• Add instances for NFData1 and NFData2. Thanks, Isaac Elliott and Oleg Grenrus!

• Fix @since-annotation for compose. Thanks, @Mathnerd314!

0.2.13.0

• Add HashMap.compose. Thanks Alexandre Esteves.

0.2.12.0

• Add HashMap.isSubmapOf[By] and HashSet.isSubsetOf. Thanks Sven Keidel. (#282)

• Expose internal modules. (#283)

• Documentation improvements in Data.HashSet, including a beginner-friendly
  introduction. Thanks Matt Renaud. (#267)

• HashMap.alterF: Skip key deletion for absent keys. (#288)

• Remove custom unsafeShift{L,R} definitions. (#281)

• Various other documentation improvements.