Release 8.1

Release notes:

• Automatically execute scripts from the web, supporting most common pastebins
• Multiple (and missing) requirement.txt file support, which can now be nested
• Avoid checking package availability if no PyPI dependencies indicated
• Add an option to show the virtualenv path in the system
• Better error/help on missing indicated script or executable from dependency
• Improved logs, PyPI urls, documentation, multiplatform support, and several other small fixes/enhancements

Changelog:

• Don't precheck-availability when no dependencies.
• Multiple requirement files support.
• Support no requirement files at all.
• Support getting the script from the web.
• Support several pastebines to download code.
• Add an option to show the virtualenv path in the system.
• Check child access.
• Check for pip.exe beyond the normal pip binary.
• Add support to nested requirement files.
• Fixed bug in parsing.parse_content() when a code line contains 'fades' and '#' but is not an import.
• Only consume/ignore the errors if are raised on purpose, and crash on unexpected problems.
• Use new PyPI domain for checking projects and their info.
• Salute only once and before polluting user's screen.
• Verify that a path was not given to --exec.
• All gifs showing small functionalities.
• Better frontpage in the LT presentation.
• Changes log level from warning to debug in the case when fades does not understand the import (strange cases).
• Fixed typos in man page.
• Improvements to usage and man.
• Instructions to release as a snap.
• Split out the dependencies parsing and merging from go().
• Update consolidate_dependencies docstring.