ceilometer plugin
added unit tests for extra costs & teams
fixed flake: removed unused statements
Merge pull request #259 from mkurek/feature/services-cost-graph-ceilometer

added ceilometer plugin
Remove needless lines

Remove needless lines
Merge pull request #1 from kula1922/patch-1

Remove needless lines
Merge pull request #265 from mkurek/feature/costs-unit-tests

added unit tests for extra costs & teams
added loading collect plugins using entry points; added extendable pricing object types
version bumped to 3.0.0-alpha
added profit centers
Merge pull request #264 from mkurek/feature/collect-plugins-entry-points

added loading collect plugins using entry points; added extendable pricing object types
Merge pull request #266 from mkurek/feature/profit-center

added profit centers
Merge branch 'services' into feature/clean-models

Conflicts:
	src/ralph_scrooge/models/service.py
	src/ralph_scrooge/models/usage.py