Release Note: New Page for "New API" and Improved "Deprecated" Page

JavaDoc can now generate a page summarizing the recent changes in an API.
The list of recent releases to be included is specified with the `--since` command-line option. These values are used to find the declarations with matching `@since` tags to be included on the new page. The `--since-label` command-line option provides text to use in the heading of the "New API" page.

On the page that summarizes deprecated items, you can view items grouped by the release in which they were deprecated.