* Update and rename README to README.rst
* Create hello_world.py
* Update README.rst
* init
* remove bashisms
* Transfer abbrevs to xontrib-abbrevs
* Transfer free-cwd to xontrib-free-cwd
* news
* black
* Transfer fish-completer to xonsh/xontrib-fish-completer
* Transfer vox to xonsh/xontrib-vox
* Transfer pdb, xog to xonsh/xontrib-debug-tools
* remove hello_world
* fix tests
* black
* fix whitespaces
* fix readme
* Update python_virtual_environments.rst
* Update README.rst
* Update xontribs_transfer.rst
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Co-authored-by: a <1@1.1>
