Merge tag 'v0.5.1' into develop

RLS: dotfiles v0.5.1

* tag 'v0.5.1':
  RLS: VERSION.txt: 0.5.1
DOC: usage.rst
RLS: VERSION.txt: 0.5.2
Merge branch 'release/0.5.2'

* release/0.5.2:
  RLS: VERSION.txt: 0.5.2
  DOC: usage.rst