1.6.1

CHANGES:

Fixes

• Switch verbosity from 1 to 0. This is the same default that merlin uses.
  The old value for verbosity (#433)

• Get fresh diagnostics (warning and error messages) on a file save (#438)

  Note: If you want the fresh diagnostics to take into account changes in other
  files, you likely need to rebuild your project. An easy way to get automatic
  rebuilds is to run dune in a watching mode, e.g.,[dune build --watch].