Upgrade version and update changes
Merge branch 'develop' into release/2.5.0
Update CHANGES.rst
Merge tag 'release/2.5.0' into release/2.5.1
changelog updated and version bumped
Merge pull request #201 from mkurek/release/2.5.1

changelog updated and version bumped
usages per device plugin fixed
Merge pull request #202 from mkurek/fix/devices-report-usages-price

usages per device plugin fixed
Merge branch 'develop' of github.com:allegro/ralph_pricing into develop