Release 3.18. Refs #487.

[ivanperez-keera]

This PR updates the version numbers of all packages, as well as the version bounds of all dependencies on Copilot, as prescribed in the solution proposed for #487.

[ivanperez-keera]

Change Manager: Verified that:

• Solution is implemented:

  • [X] The code proposed compiles and passes all tests. Details: Build log: https://app.travis-ci.com/github/Copilot-Language/copilot/builds/268176478

  • [X] The solution proposed addresses the necessary modification to cabal packages. The following docker image installs copilot enforcing the new version via compiler constraints. It prints the message "Success" at the end if all completes correctly, and shows an error message otherwise.

    
    FROM ubuntu:focal

  RUN apt-get update

  RUN apt-get install --yes libz-dev RUN apt-get install --yes git

  RUN apt-get install --yes wget RUN mkdir -p $HOME/.ghcup/bin RUN wget https://downloads.haskell.org/~ghcup/0.1.17.7/x86_64-linux-ghcup-0.1.17.7 -O $HOME/.ghcup/bin/ghcup

  RUN chmod a+x $HOME/.ghcup/bin/ghcup ENV PATH=$PATH:/root/.ghcup/bin/ ENV PATH=$PATH:/root/.cabal/bin/ RUN apt-get install --yes curl RUN apt-get install --yes gcc make libgmp3-dev RUN ghcup install ghc 9.0 RUN ghcup install cabal 3.4 RUN ghcup set ghc 9.0.2 RUN cabal update

  SHELL ["/bin/bash", "-c"] CMD git clone $REPO \ && cd $NAME \ && git checkout $COMMIT \ && cabal install --lib copilot**/ \ --constraint="copilot==3.18" \ --constraint="copilot-c99==3.18" \ --constraint="copilot-core==3.18" \ --constraint="copilot-prettyprinter==3.18" \ --constraint="copilot-interpreter==3.18" \ --constraint="copilot-language==3.18" \ --constraint="copilot-libraries==3.18" \ --constraint="copilot-theorem==3.18" \ && echo Success

  Command (substitute variables based on new path after merge):

  $ docker run -e "REPO=https://github.com/ivanperez-keera/copilot" -e "NAME=copilot" -e "COMMIT=d3f5a5d99e83a137de03a443d32052a9b205df36" -it copilot-verify-487

• [X] Implementation is documented. Details: No changes to the documentation needed (change to fields in cabal).
• [X] Change history is clear.
• [X] Commit messages are clear.
• [X] Changelogs are updated.
• [X] Examples are updated. Details: No examples affected.
• [X] Required version bumps are evaluated. Details: No bump needed (but implemented by the change).