update Ubuntu/Debian
update changelog
add new libraries to recommends
only recommend (not depend) XML and YAML packages
add gbp.conf
force python_distutil buildsystem
add necessary build dependencies
add RST
fix build dependencies
fix test target
add test patch
test
revert change
remove patch again
use pymongo instead of the pure python implementation for bson support
make the bson handler python3 compatible
remove redundant coverage pragma
attempt to fix python3.4 problems
Merge branch 'master' of github.com:RestAuth/RestAuthCommon into debian
reorder deps, bump standards to 3.9.5