v1.1.0:

• Add Weighted collections: collections where the limit is not in the number of elements but in their total weight.
• Add accessors and removers for newest and oldest elements in collections.
• Fix bug where weak caches would get emptied by garbage collections.

v1.0.0:

• Separate value caches and resource caches. The two distinct intended use are now given separate names and signatures. Resource caches are careful about resource ownership.
• Switch from First Class Module API to functor API.
• Note that this version is a complete rewrite with new package names, new module names, new APIs, new concepts. These changes are too numerous to be listed here: only the most important feature change is listed above. Refer to the README and the documentation which contain up-to-date information on the library as it stands.
• Compatible with OCaml 5.0.0. The previous version used functions of the Ephemeron module that were removed in OCaml version 5.

v0.9:

• Provide Collection.length

v0.8:

• Provide Collection.fold_older_first
• Documentation fixes

v0.7:

• Add filter to caches
• Support for empty and singleton caches in ringo-lwt

v0.6:

• Add specialised 0-sized and 1-sized caches
• Improved test coverage
• Improved documentation

v0.5:

• Fix leakiness of Lwt-wrapped caches (clean-up functions would hold onto bindings)
• Fix race condition in Lwt-wrapped caches (rejection of a non-held promise cannot cause removal of a held promise)
• Folding in Lwt-wrapped caches ignores failed promises (aligns semantics with automatic cleaning)
• Improve documentation of Lwt-wrapped caches

v0.4:

• Handle reinsertion as promotion
• bugfix: do not hard-fail when removing the single element of a collection
• Wrappers for Lwt, Lwt-Option, and Lwt-Result
• rename Strict to Strong (as opposed to Weak)

v0.3:

• Rename Loose as Weak
• Rename CACHE as CACHE_MAP (and associated name changes) to hint at key-value storage
• introduce set-caches (CACHE_SET) which are simple value caches (not key-value caches)
• introduce clear to empty caches entirely
• fix singleton-collection bug
• simplify code in main entry module

v0.2:

• complete rewrite: the library pivots towards caches

v0.1: Initial release

Archaeology: Raw import from the Tezos project