* Merged in lp:~aaron-whitehouse/duplicity/0-8-merge_selection_tests - Merge in TestExcludeIfPresent from 0.7-series, which tests the behaviour of duplicity's --exclude-if-present option. - Move and rename TestTrailingSlash2 test (was duplicate name) as in 0.7-series. - Fix PEP error on adbackend.py. - Add jottalib as a tox dep to fix pylint error. - Remove unnecessary skipUnless Linux as per 0.7-series.