Upgrade deps
Introduce 'filterActions' function
Introduce actions 'groups' concept
Bump version to 0.4.13
Improve actions group logic (products, orders)
Move inventory utils into own file
Add spec for inventory sync
Use latest node-utils version
Use concat over unique to ensure we keep all variants.
Bump version to 0.4.14
Fix case when there are no differences.
Bump version to 0.4.15
Ensure nothing is done when we filter all actions.
Bump version to 0.4.16
Add support to change variant SKUs. Closes #10.
Bump version to 0.4.17
Remove debug log.
Bump version to 0.4.18
Enhance black/white action config. Fixes #12
Support changePrice action. Closes #11