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1.4.0

  • fixed performance bugs in weak hash tables implementation, by back porting some old fixes from OCaml's Weak module (reported by Edwin Török)
  • improved equality functions in Hset and Hmap (contributed by Dorian Lesbre)
  • a lot of missing functions in Hset and Hmap wrt OCaml's Set and Map, with the notable exception of to_seq_rev (contributed by Dorian Lesbre)

1.3

  • modules Hset and Hmap moved into module Hashcons, to avoid the clash with a module Hmap from another project (patch from Qi LI)

1.2

  • fixed bug in Hset (reported by Jan Midtgaard)

1.1

  • do not assume anymore that the hash function returns a nonnegative value

1.0, 09/09/2013

  • code moved to github