Store nohup.out in ~/.atom

Storing it in the temp directory can lead to permissions issues when
Atom is run by multiple users.

Closes #3056
Remove spaces around =
Don't try to update lines/line numbers until after initial measurement

Fixes #3047
Start caching compiled CSON files

Compiling CSON takes ~45 seconds so only compile files that aren't
in cache speeding up the build once the cache is primed.
Upgrade to language-c@0.25
Prepare 0.119
Upgrade to tabs@0.47
Mount EditorComponent as soon as ReactEditorView is constructed

...instead of waiting for it to be attached. This makes it simpler to
get shim references when using ReactEditorView for mini editors.
Use ReactEditorView in SelectListView when flag is enabled
Don't apply special styles React mini editors
Merge pull request #3071 from atom/ns-react-select-list-editor

Use React for select list mini editors when config option is toggled
Upgrade to settings-view@0.135
Upgrade to timecop@0.22
:lipstick:
Apply background color of root editor node to lines as an inline style

This ensures lines have an opaque background that matches whatever the
editor is styled as, but avoids the need to apply the .editor-colors
class to the .lines div. That approach fell down when people were
setting the background color via means other than .editor-colors, such
as styling mini editors via the .editor.mini selector in the settings
view.
Give the line-numbers div an opaque background for better GPU perf

We sample both the background color of the editor and the gutter. If the
gutter has an actual background color, we use it. Otherwise we fall back
to the same background as the editor.
Upgrade to bracket-matcher@0.49
Resample background colors whenever stylesheets change

This prevents a flicker that occurred on theme changes when we just
detected this via polling. I'm going to leave the polling as a catch-all
in case the editor is styled inline in some way.
Merge pull request #3077 from atom/ns-fix-scroll-perf-regression

Fix performance regression caused by transparent backgrounds on lines and gutter
Upgrade to bracket-matcher@0.50