Deprecate `changeFocus` option to Workspace::open

Its documentation was already removed, and it was already
deprecated in ::openSync.
:arrow_up: pathwatcher@2.3.5
:arrow_up: language-yaml@0.20.1
:arrow_up: language-toml@0.14.1
:arrow_up: language-shellscript@0.10.1
:arrow_up: language-sass@0.26.1
:arrow_up: language-ruby@0.42.0
:arrow_up: language-python@0.24.1
:arrow_up: language-mustache@0.10.1
:arrow_up: language-less@0.18.1
:arrow_up: language-javascript@0.45.1
:arrow_up: language-hyperlink@0.12.2
:arrow_up: language-html@0.26.1
:arrow_up: language-go@0.19.1
:arrow_up: language-gfm@0.54.1
:arrow_up: language-css@0.23.1
:arrow_up: language-coffee-script@0.38.1
Merge branch 'atom'