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Upgrade to command-palette@0.23
Upgrade to find-and-replace@0.119
Upgrade to atom-shell@0.13.2
Decide to measure gutter's width in gutter

The gutter is in a better position to determine if the max line number
length has changed because it's a property that gets passed in so we
can compare current with previous.

Fixes #2659
Honor the `center: true` option in scrollTo* methods

Fixes #2648
Merge branch 'atom-shell-v0.13.2'
Break into separate specs for lineHeight, fontSize, and fontFamily
Wait to measure characters if editor is hidden

Also, when characters *are* measured, request a display update
Merge pull request #2667 from atom/ns-react-dont-measure-when-hidden

Don't measure character widths when editor is hidden
Upgrade to find-and-replace@0.120.0