2.10.4 (Changes from 2.10.3)
=========================
* Reset comonad depenency to 4.0
* Reset semigroupoids dependency to 4.0
* Remove comonad-transformers dependency

2.10.3 (Changes from 2.10.2)
=========================
* Bump dependency on comonad
* Bump dependency on comonad-transformers
* Bump dependency on semigroupoids

2.10.2 (Changes from 2.10.1)
=========================
* Bump dependency on comonad-transformers
* Bump dependency on containers
* Bump dependency on semigroupoids

2.10.1 (Changes from 2.10)
=========================
* Bump dependency on comonad

2.10 (Changes from 2.9.0)
=========================
* Removed unused depencencies
* Fixed bug in the definition of nullPL

2.9.0 (Changes from 2.0.3)
==========================
* Introduced partial/nullable lenses (Data.Lens.Partial).
* Altered the associativity of (^.) and (^!) from right to left.
* Introduced Tensor type-class to Control.Category -- instanced by Lens and PartialLens.
