Merge pull request twpayne#1174 from twpayne/misc-fixes

Misc fixes

Re-enable passing test

Merge pull request twpayne#1135 from twpayne/update-deps

Update dependencies

Tidy up comparison doc

Restore original checksums filename

Merge pull request twpayne#1116 from twpayne/fix-1115

Fix upgrade command for older versions

Merge pull request twpayne#1114 from twpayne/misc-fixes

Update dependencies and tidy up internals

Merge pull request twpayne#1095 from twpayne/build-libc-specific-arch…

…ives

Build libc-specific archives

Merge pull request twpayne#1086 from twpayne/upgrade-cmd

Restore upgrade command

Merge pull request twpayne#1079 from twpayne/misc-fixes

Misc fixes