Pyoai

- Added customizable client retry policy (contributed by adimascio)

- Added compatibility with Python 3.8 (contributed by krenzlin)

- Do not resume ListRecord requests if no result was returned (contributed by wetneb)

- Added Python 3 compatibility (contributed by Tobias Kurze, Uli Köhler
and Michał Pasternak)
- Travis support and badges (Michał Pasternak)

- Added switch in client to force harvesting using HTTP Get method
(contributed by Stefan Oderbolz).

- Added unofficial GetMetadata verb in server and client. GetMetadata
is identical to GetRecord, but only returns the first element below
the oai:metadata element, it does not return the oai enveloppe.

- Changed contact info, Migrated code from Subversion to Mercurial

- Convert lxml.etree._ElementUnicodeResult and ElementStringResult to
normal string and unicode objects, to prevent errors when these
objects get pickled. (lp 617439)