orientation -> location
Rename custom element so as not to clash
Remove location junk from panel creation
Add matcher toHide()
Add hide/show ability for panels
:arrow_up: language-ruby@0.40
:arrow_up: language-toml@0.14
:arrow_up: atom-shell@0.18.1
Merge pull request #3874 from atom/atom-shell-v0.18.1

:arrow_up: atom-shell@0.18.1
Set the heights of atom panels for location left and right.
Only build debian package for now
Prepare 0.139
Add priority system to the panels
Upgrade to language-c@0.29
Fix cursor so clicking the below the last line of text puts the cursor at
the end of the last line.
Fix cursor not being able to move within the last line of text.
Never break when past the last row
Set targetLeft to Infinity when past last row
Add spec for clicking past last line
Mention single click