Deprecate Config::getSettings

Also, remove support for getting all settings for a scope selector

Signed-off-by: Nathan Sobo <nathan@github.com>
:arrow_up: language-javascript@0.50
Merge pull request #4566 from atom/mb-config-cleanup

Clean up config
Update spec since { lines now outdent in JS
:arrow_up: styleguide@0.35
:arrow_up: tree-view@0.138
Upgrade notifications to fix errors with semicolons
Upgrade notifications@0.16.0
Upgrade deprecation-cop to remove deprecations
:arrow_up: language-javascript@0.51
Prepare 0.159
Add initial atom.exe wrapper
Disconnect spawned process
Exit main process
Remove disconnect call
Add atom.cmd
Add initial atom.cmd
Pass through arguments
Parse output flags in atom.cmd
Remove escaped slashes