Add updateDecorationForMarker()
Handle decoration updates in the editor-component
Handle the decoration + highlighted in the selection
Don’t use attributes
Move flashing into the highlight component
:lipstick: Waaay less awkward
:lipstick:
Don’t use state. Modify the dom directly
Add a Decoration object. Rework to use this object
Remove the decoration update stuff
Decorations can be flashed
Flash works for selections
fix spec
Use ‘flash’ class rather than ‘highlighted’.

Pull the flash into the base theme rather than the ui themes
Upgrade all the themes

Removes flash / highlighted from ui themes
Adds flash color to syntax themes
Fix spec
:lipstick:
Add Editor::selectionFlashDuration rather than magic number
Merge pull request #2794 from atom/bo-flash

Add ability to 'flash' selections