“This release adds a new report to “Actions | Pages” which displays the page Title. There are now two page reports, Page URLs and Page Titles. The page title can be set via setDocumentTitle().”
On my site I customized the document title and the visits were counted under Action > Pages. After the 0.5 update my customized document titles are counted under Action > Page titles.
For today the counts before the update were counted under Action > Pages and the counts after the update under Action > Page title. They were not merged together. But only the data for today. For example yesterday all my data is displayed under Action > Page title.