0.5.1.0

• Infer input type from result type (#25)
• Allow changing of multiple type parameters (#24)
• Allow changing of type parameters that have kinds other than * (#23)
• Fix error message in subtype lens

0.5.0.0

• Lenses and prisms are now type-changing.
• More informative error messages
• More readable type signatures in type errors and when using :t
• Use doctest
• Include examples in Haddock

Breaking API changes

• The type parameters of the classes have been changed to accommodate the type-changing update:

  class HasField name a s -> class HasField name s t a b etc.

  Accordingly, field :: Lens' s a -> field :: Lens s t a b