racket/draw: fix bad rounding of paper sizes in points
pkg/lib: add `#:package-exn-handler` to `pkg-catalog-archive`
scribble/manual: change `history` sort order

Now that some entries have changes over multiple versions, a forward
sort order seems better than reverse to me.
scribble & pict: add history

These history notes should have been part of commits c4a58dc4a5 and
05760a12f6.
raco test: add history note on `--heartbeat`

Should have been included with f3c8638366.