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*