Run the linter separately from the tests

This branch will:

• Change CI such that the linters are only run once, and run in parallel with tests
• Allow the user to run the linter separately with tox -e lint
• Update relevant docs in contributing guide

added 1 commit

• 91c8b634 - CONTRIBUTING.rst: Adding instructions to run the linter separately

Compare with previous version

added 2 commits

• 892bf99e - tools/requirements.{in,txt}: Fix warning about duplicate jinja
• 7c681c42 - tools/dev-requirements.{in,txt}: Removed requirements on pylint/codestyle pytest plugins

Compare with previous version

enabled an automatic merge when the pipeline for 7c681c42 succeeds

merged

mentioned in commit d6689ed2

@tristanvb thanks for this. It also fixes #841 (closed) :)

mentioned in issue #841 (closed)

mentioned in commit f16ff8d1

mentioned in commit e2592051

mentioned in merge request !1111 (merged)