Cite the idea of scratching an itch.

Presumably this is a very old metaphor, but it was memorably applied
to software development by Eric Raymond's classic "The Cathedral and
the Bazaar".
Remove redundant documentation already found in "README.md".

Maintaining both will be a error-prone hassle.  Instead, just add a
comment here referring readers to the "README.md" in GitHub for more
information.
Clarify what asynchronous background demangling is an alternative to.
Generalize "bugs" to "issues".

Some of these are not so easily classified as bugs per se.
Offer a convenient link for suggestions to improve the display faces.