Upgrade to symbols-view@0.64
Upgrade to language-coffee-script@0.34
Upgrade to symbols-view@0.65
Remove notification stylesheet

These were currently undocumented in the styleguide, had hard-coded colors,
weren't being styled by the default light/dark UI themes, and were unused.

They were also causing conflicts with the notification token scope that
the Objective-C grammar uses.
Upgrade to less-cache@0.15
Deprecate pane:removed event
deprecatedViewEvents -> setupViewEventDeprecations
Deprecate cursor:moved
Deprecate selection:changed
Deprecate pane-container:active-pane-item-changed
Deprecate pane:active-item-changed
:lipstick:
Deprecate pane:became-active
Deprecate pane:became-inactive
Deprecate uri-opened
Deprecate pane:item-added
Deprecate pane:item-removed
Deprecate pane:item-moved
Deprecate custom events on EditorView
Deprecate custom events on PaneView