restore accidentally-stomped-on changelog data
implement equals for Union types by checking if they're the union of the same things; also overload numeric-not-equal operator
implement subtype/supertype stuff in unions (TODO: needs testing)
fix short-circuiting in inlined code (RT#99312)

--HG--
extra : source : 19e222f94fbdd58bc353a57665b0d3eb43e446ce
fix Exporter::Tiny-related warning in test case

--HG--
extra : source : e74eb7b0d979122405e48242e7002a400624628c
catch up with missing changelog entries
merge Type::Tiny::Union improvements
Int is supposed to be a subtype of Str, and thus not a reference
bump version; changelog
fix test case for recent Int changes (changes to the text of error messages are explicitly allowed under the stability policy)
Added tag 1.001_002 for changeset fd66abe6d43d