py3: use 'surrogatepass' error handler to process U+DCxx transparently
It's disallowed by default on Python 3.
https://docs.python.org/3/library/codecs.html#error-handlers
requesting all changes
adding changesets
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added 1 changesets with 4 changes to 4 files
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4 files updated, 0 files merged, 0 files removed, 0 files unresolved
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 4 changes to 4 files
updating to branch default
4 files updated, 0 files merged, 0 files removed, 0 files unresolved