Previously, the code that handled expanding the diff context

accidentally waited twice the timeout due to two calls to _.delay,

possibly from a refactoring that occurred to remove the $.hoverIntent

dependency. This has been removed and the delay has been lowered to

250ms (from 500ms) to make the UI feel much snappier. It used to take

over 1s to fully expand controls (500ms for each _.delay call plus

the length of jQuery's "slow" animation). It now takes just over half

that to fully expand them.

Hovered over fragments and saw the delay was reduced.