Summary of important user-visible changes for pkg-octave-doc 0.8.1:
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 ** An `INDEX` line carrying several names is read as several names.  The
    doc-cache builders took the whole line as one name, which answered to no
    file, so every function listed on such a line went uncached and the line
    was reported as an entry answering to nothing.  In the `statistics`
    package, which puts several names on 70 of its 428 name lines, 221
    functions were hidden from the caches.
