Implement Send on NamespaceSet first draft
This is a rebase of minidom-rs!35 on top of the merged repository, (plus the debug_looks_correct
test fixed instead of removed).
Implement Send on NamespaceSet first draft
Copy all namespaces on each element to avoid the reference to parent elements, which was making NamespaceSet !Send.
Some optimisations could be done to avoid copying strings all around, but this is probably good enough as a start.
Signed-off-by: Maxime “pep” Buquet pep@bouah.net