Prepare 0.4.4 (#65)

* Bump version to 0.4.4

* Update CHANGELOG

prepare release 0.4.3 (#57)

Update CI workflow

Bump version to 0.4.1

Bump version to 0.4.0

Bump for 0.3.4

Version 0.3.3

Version 0.3.2

Version 0.3.1

Version 0.2

* Make `Embed` an instance of `Ord`

* Provide `NFData` instances for all the combinators.
  Depend on 'deepseq'

* Re-implement `freshen'` and `gfreshen` using a free monad to give
  GHC a chance to inline it all away.  This changes the type of
  `gfreshen`.  Major version bump.

	* Expose `FFM`, `liftFFM` and `retractFFM`

* Start benchmarking some of the operations (particularly `unbind`).