Revision history for group-theory

0.2.0.0

• Depend on the groups package (#19 - thanks to @taneb for providing the package!)
• Added FreeProduct (#13)
• Removed unsound Group instances (#14)
• Add the GroupOrder typeclass for order calculations (#20)
• Fixed 'Permutation' instances (#21)
• Bugfixes for FreeAbelianGroup, allowing it to handle sparsity more robustly, as well as handling mempty values on construction with a pattern synonym.
• Typo fixes and documentation updates (#16, #17)

0.1.0.0

• First version. Released on an unsuspecting world.