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+# 2.2.1
+
+Released 2019-02-15.
+
+* Make sure our rayon parallel iterators are exported. Previously instances of
+  them were returned by `pub` methods but the types themselves were not
+  exported.
+
+# 2.2.0
+
+Released 2019-01-30.
+
+* Add the `Arena::alloc_with_id` method. This is better than using
+  `Arena::next_id` directly most of the time (but is also not *quite* as
+  flexible). See [#9](https://github.com/fitzgen/id-arena/issues/9) and
+  [#10](https://github.com/fitzgen/id-arena/pull/10).
+
+--------------------------------------------------------------------------------
+
+# 2.1.0
+
+Released 2019-01-25.
+
+* Added optional support for `rayon` parallel iteration. Enable the `rayon`
+  Cargo feature to get access.
+
+--------------------------------------------------------------------------------
+
+# 2.0.1
+
+Released 2019-01-09.
+
+* Implemented `Ord` and `PartialOrd` for `Id<T>`.
+* Added an `Arena::with_capacity` constructor.
+* Added `Arena::next_id` to get the id that will be used for the next
+  allocation.
+
+--------------------------------------------------------------------------------
+
+# 2.0.0
+
+Released 2018-11-28.
+
+* Introduces the `ArenaBehavior` trait, which allows one to customize identifier
+  types and do things like implement space optimizations or use identifiers for
+  many arenas at once.
+* Implements `Clone`, `PartialEq` and `Eq` for arenas.
+
+--------------------------------------------------------------------------------
+
+# 1.0.2
+
+Released 2018-11-25.
+
+* `Id<T>` now implements `Send` and `Sync`
+* The `PartialEq` implementation for `Id<T>` now correctly checks that two ids
+  are for the same arena when checking equality.
+
+--------------------------------------------------------------------------------
+
+# 1.0.1
+
+--------------------------------------------------------------------------------
+
+# 1.0.0