[add] mrp_bom_through_attributes
[mod]
[mod] calculating changes on linked product qty
[mod] misspelling
[mod]
[mod] pep8
[add]add file
[mod]
[mod]
[mod]
[mod]
Merge pull request #368 from mikelarre/mrp_bom_through_attributes

[add] mrp_bom_through_attributes