Every entry has a page of its own

Each entry now has its own address, like relnotely.com/changelog/42-dark-mode, with Newer and Older links to walk through the rest. The feed, subscriber emails and the widget all link to it, so a reader lands on the release they clicked rather than the top of the list.

Edit a title and the old address redirects to the new one, so links you have already shared keep working. An entry with a screenshot uses it as the picture when its link is shared.