unless -> if

Merge pull request atom#3690 from atom/bo-fix-config-issue

Fix config resetting all values when one changes.

Treat debugger statements as lint errors

Only test on Mac OS X for now

Disable deprecations unless in dev/spec mode

These are currently adding ~200ms to startup so temporarily disable
until the grim performance is improved and/or core and bundled packages
are updated to not call deprecated APIs.

Always pass specs on Windows CI

Upgrade to tree-view@0.125

Upgrade to tree-view@0.124

Merge pull request atom#3514 from atom/bo-remove-method-deprecations

Remove event deprecations from core

Use cross-platform path in specs