- epm-release_upgrade: use [alt] sign for Sisyphus
- epm-autoremove: supports for python2 and python3 separately
- epm-sh-install: don't check vendor if a package is unaccesible
- add prescription python2-remove
- repack: add lightworks.sh

- drop alternative name upm, provide epm
- epm-restore: some improvements
- improve teamviewer repack

- epm-restore: add support for various names of requirements.txt file
- epm play: add anydesk, assistant, onlyoffice support
- various small improvements

- epm-install: return 0 if all packages are filtered out
- epm-addrepo: use sudocmd for apt-repo
- epm-repofix: disable root checking

- epm-restore: add requirements_dev.txt, setup.py, require.json (npm)
- epm-release_upgrade: drop signs if there are unknown vendor ID during update from repo