RLS: VERSION.txt: 0.5.3
Merge branch 'release/0.5.3'

* release/0.5.3: (31 commits)
  RLS: VERSION.txt: 0.5.3
  DOC: usage.rst
  DOC: README.rst
  BUG: ipython_config.py: --print-zsh
  DOC: venv.rst
  DOC: venv.rst
  DOC: venv.rst
  DOC: venv.rst
  DOC: venv.rst
  DOC: venv.rst
  DOC: venv.rst
  DOC: venv.rst
  DOC: venv.rst
  DOC: venv.rst
  DOC: venv.rst
  DOC: tools.rst, usage.rst, venv.__init__
  DOC: tools.rst
  DOC: tools.rst
  DOC: tools.rst
  DOC: tools.rst
  ...
Merge tag 'v0.5.3' into develop

RLS: dotfiles v0.5.3

* tag 'v0.5.3':
  RLS: VERSION.txt: 0.5.3