Change API to Util.Text.getTruncatedText so it takes a measurer function
rather than an element.
Have Label use Text.Util for writing text rather than handcrafted solution.
Fix #583
Fix the unit tests, phantomjs was being finnicky, gave it 1.5px margin error...
Make unit tests more forgiving when in PhantomJS so as to pass travis
Move multiline expressions into single lines
Merge pull request #590 from palantir/fix-label-bug

Fix label bug