* Bump pylint from 2.3.1 to 2.4.4

Bumps [pylint](https://github.com/PyCQA/pylint) from 2.3.1 to 2.4.4.
- [Release notes](https://github.com/PyCQA/pylint/releases)
- [Changelog](https://github.com/PyCQA/pylint/blob/master/ChangeLog)
- [Commits](https://github.com/PyCQA/pylint/compare/pylint-2.3.1...pylint-2.4.4

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* removed explicit astroid dependency

* linting

* more flake8 linting

* explicit pylint dependency

Co-authored-by: Daniel Ecer <de-code@users.noreply.github.com>

* ugraded to python 3

* upgrade pylint and pytest

* replaced StandardError

* exclude useless-object-inheritance

* python3 compatibilities uncovered by linting

* fixed tests

* fixed more python3 test incompatibilities

* added dev-venv target

* added subextract model

* added nltk dependency

* flake8 ignore line break before binary operator

* moved dev dependencies up

* added nltk punkt download

* added nltk download to dev-venv; pytest and pytest-not-slow target

* added subextract training pipeline

* added optional xpath namespaces

* log failed xml file

* use recover parser option

* added subextract app

* start subextract server

* renamed to autocut

* declare slow and very_slow pytest markers

* make autocut main test as slow

* fixed post data

* updated README

* also build non-dev image as part of ci

* added pytest.ini to dev image