Changelog for the `operational` package
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**0.2.4.2** -- Maintenance release.
* Compatibility with `mtl-2.3.1`
**0.2.4.1** -- Maintenance release.
* Restrict dependencies to ensure GHC >= 7.10.
**0.2.4.0** -- Feature release.
* Update to build with GHC 9.0.1.
* Add utility functions `interpretWithMonadT`, `unviewT` and `mapInstr`
* Add utility `Functor`, `Applicative`, and `Monad` instances for `ProgramViewT` type.
**0.2.3.5** -- Maintenance release.
* Update references to other packages.
* Modernize `.cabal` file.
**0.2.3.4** -- Maintenance release.
* Restrict dependencies to ensure GHC >= 7.2.
**0.2.3.3** -- Maintenance release.
* Minor fixes to documentation and examples
**0.2.3.2** -- Maintenance release.
* Bump `mtl` dependency to allow 2.3
**0.2.3.1** -- Maintenance release.
* Bump `mtl` dependency to allow 2.2
**0.2.3.0** -- Maintenance release.
* added instance for `MonadReader` class
* clean up documentation
**0.2.2.0** -- Feature release.
* add utility function `interpretWithMonad`
**0.2.1.0** -- Maintenance release.
* minor change: eta-reduce `Program` and `ProgramView` type synonyms
**0.2.0.3** -- Maintenance release.
* moved project repository to github
**0.2.0.0** -- Feature release.
* changed name of view type to `ProgramView`
* added instances for mtl classes
* new function `liftProgram` to embed `Program` in `ProgramT`
* new example `TicTacToe.hs`
* various documentation updates
**0.1.0.0**
* initial release