Changelog for copilot-language-3.2.1

2021-03-07 * Version bump (3.2.1). (#20) * Completed the documentation. (#14) 2020-05-07 * Version bump (3.2). * Fixed the reverse order of triggers (#11). * Update description, bug-reports, changelog fields in cabal file (#8). * Bump ghc-prim version bounds (#12). 2019-11-22 Ivan Perez <ivan.perez@nianet.org> * Version bump (3.1). * Remove ExternFun (#6).