0.2.1

Released 2019-01-22.

Bad indexing into an arena will now panic with a message explaining what happened instead of the generic unwrap panic message.

0.2.0

Released 2018-11-28.

Added support for serde serialization and deserialization. Enable the "serde" feature to access it.
Added clear method to empty an arena.
Added a drain method to iterate over items and remove them from the arena at the same time.
Implemented ExactSizeIterator, DoubleEndedIterator, and FusedIterator for our various iterators. This also gave a nice speed up to iteration.
Added the get2_mut method to get two distinct items out of the arena mutably at the same time.