Docker-banner-gen

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- escaping ` and \ now in the banner text

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- fixed parse variable for outputting font info

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- added option for specifying the width of the banner (`-w`, `--width`)
- added option to list available fonts (`-L`, `--list_fonts`)
- added option to output information about font (`-F`, `--print_font_info`)

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- added ability to add a subtitle (placeholder `{SUBTITLE}`) using `-s, --subtitle`,
which can be used for a version number
- added `-i, --print_templates` option to output templates and the supported placeholders

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- fixed entry point of console script

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- initial release


PyPi
====

Preparation:

* increment version in `setup.py`
* add new changelog section in `CHANGES.rst`
* commit/push all changes

Commands for releasing on pypi.org (requires twine >= 1.8.0):


find -name "*~" -delete
rm dist/*
./venv/bin/python setup.py clean
./venv/bin/python setup.py sdist
./venv/bin/twine upload dist/*



Github
======

Steps:

* start new release (version: `vX.Y.Z`)
* enter release notes, i.e., significant changes since last release
* upload `docker-banner-gen-X.Y.Z.tar.gz` previously generated with `setyp.py`
* publish