* Drop support for legacy Python 2
* Add python_requires to help pip
* Upgrade Python syntax with pyupgrade
* Upgrade Python syntax with pyupgrade --py3-plus
* Python 3 imports
* Replace six
* Update CONTRIBUTING.md
* Added line to changelog
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* Removing all the "#!/usr/bin/env python" lines, they do not need for python3, solving issue number: #19.
* Restored all the shebangs in the tools and tests folders (because they are real executables) but used "#!/usr/bin/env python" instead of "#!/usr/bin/python" as this blog points out: https://www.peterbe.com/plog/importance-of-env
Removed also the shebang from pdfminer/psparser.py file.