Merge tag 'v0.6.0' into develop

RLS: dotfiles v0.6.0

* tag 'v0.6.0':
  RLS: VERSION.txt: 0.6.0
RLS: MANIFEST.in: autogenerated git_manifest
BLD: update_manifest before release finish; twice, if necessary
BLD: Makefile: add start-release task
RLS: VERSION.txt: 0.6.1
Merge branch 'release/0.6.1'

* release/0.6.1:
  RLS: VERSION.txt: 0.6.1
  BLD: Makefile: add start-release task
  BLD: update_manifest before release finish; twice, if necessary
  RLS: MANIFEST.in: autogenerated git_manifest