Log message:
print: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

Log message:
print: Remove SHA1 hashes for distfiles

Log message:
tex-*: add TEXLIVE_UNVERSIONED=yes

Log message:
tex-checkend{,-doc}: Add version 1.0

When an environment is left open, LaTeX gives an error at the
end of the document. However it only informs about the first of
them, while the rest are shown with meaningless errors: (\end
occurred inside a group at level N) This package replaces these
errors with more useful messages which show which environments
(in reverse order) were not closed. There are no user macros:
just use the package.