Attached is an updated debdiff which includes upstream's fix for #768756 and change of maintainer and uploaders fields. It also includes some minor packaging changes which were committed to wader's vcs [1], but not yet released (see #662823).
I haven't pushed any changes to wader's vcs as I am waiting for approval to join the Python Applications Packaging Team. [1] http://anonscm.debian.org/viewvc/python-apps/packages/wader/
wader-new-maintainer.debdiff
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