* upgrade to LTS-12.26 (GHC 8.4.4)

* switch travis to use GHC 8.4.4 and cabal-install 2.2

* update alex and happy versions

* migrate to GHC 9.2.8 and 9.4.6

* use gsdlab/StringMap fork until merged

* update versions and revise build instructions

* gitignore stack.yaml.lock

* update gsdlab/StringMap to the latest commit

* update release date

* add WISE Lab

* simplify constraint as MonadFail implies Monad

* update maintainer email

* harmonize versions

* code smells

* add an instance for MonadFail to TypeAnalysis and use fail instead of error. Fix code smells

* upgrade to lts-21.9

* add .project file listing the external git deps

* release date and LTS-21.11