[fix] return list instead of set

This problem was caught by the tests: the set is used in a domain
and OpenERP expects a list, not a set.
Merge pull request #8 from lepistone/7.0-fix_return_list

[fix] return list instead of set
autopep8 lint
manual lint of what autopep8 didn't handle
Merge pull request #9 from lepistone/7.0-lint

lint the repo
initial commit for stock_picking_update_date

It is green already, but I need to handle the stock.picking.in and out
and add some docs in __openerp__.py
allow to update the date on all picking types
update date: improve description
rename things as suggested
improve comments and tooltips
fix name of  project
Merge pull request #10 from lepistone/7.0-add-update-date

7.0 add stock_picking_update_date
[ADD] stock_traceability_internal: mandatory prodlot on internal moves
Fixes #5 by giving a basic implementation