The release notes in Admin read ## as the version and ### as a section,
and printed a #### line as plain text. A release that heads each feature
inside a section with #### (Tours, TREK Studio under Added) now shows it
as a feature heading between the section and its text, on desktop and on
the phone.
useGithubReleases holds the paged fetch, the prerelease filter, the expanded rows and the date format, and parseReleaseNotes splits a release body into the blocks both panels draw. The phone keeps its page walk past hidden prereleases through the fillPages option, its repository link and its own inline link scan; the desktop keeps one page per load.