chore: Bump to 0.3.3

fix: readOp and show fails on new opcodes

chore: Refactor CI into using Nix with caching

fix: Replace implicit NIX_PATH pinning with flake.lock

docs: Simplify README, release v0.3.2 on Hackage and GitHub

docs: Explain default.nix better

fix: remove cached sdist package that is already released

chore: reduce test matrix to single ghc version

chore: release 0.3.1 to hackage (actually)

chore: add pre-push hook to assert hpack regeneration

chore: release 0.3.1 to Hackage

chore: Missing upper bounds on library text

fix: The import of ‘foldl'’ from module ‘Data.List’ is redundant

chore: Bump to 0.3.0: Upgrade 'container' version bounds, CI test-matrix, CI hash-pins

chore: release to Hackage via CI