# Revision history for hegg

## 0.2.0.0 -- 2022-09-19

* Expose `runEqualitySaturation` to run equality saturation on existing e-graphs
    whole instead of focusing on individual expressions
* (Very) significant performance improvements!
* Make `CostFunction` polymorphic over the `Cost` type, requiring that type
    to instance `Ord`
* Make e-graph abstract. The internal structure can still be modified through
    the available lenses in `Data.Equality.Graph.Lens`
* Fix a bug related to `NodeMap`'s size.

## 0.1.0.0 -- 2022-08-25

* First version. Released on an unsuspecting world.