Python3 cffi bindings

[David Bremner]

An embedded and charset-unspecified text was scrubbed...
Name: not available
URL: <http://notmuchmail.org/pipermail/notmuch/attachments/20191020/f3464134/attachment.ksh>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: test.output.xz
Type: application/x-xz
Size: 5512 bytes
Desc: not available
URL: <http://notmuchmail.org/pipermail/notmuch/attachments/20191020/f3464134/attachment.xz>