pulldown-cmark fallout

• rust-ruma-common staged in git (see !803 (merged))
• rust-cursive-core staged in git (see !803 (merged))
• rust-pulldown-cmark-escape staged in git uploaded before rust-pulldown-cmark
• rust-pulldown-cmark uploaded
• rust-skeptic uploaded
• rust-upstream-ontologist (no changes needed; version range for pulldown-cmark in this package is very wide)
• upstream-ontologist, python-upstream-ontologist (see python-team/packages/upstream-ontologist-py!4 (merged))
• elan (see debian/elan!1 (merged))
• rust-rinja-derive staged in git (see !803 (merged))
• rustup (will be addressed in 1.27 update)
• mdbook (see mdBook!1 (merged))
• rust-version-sync (maintained by Jonas, contacted in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1071789)

sorry for the premature upload