Merge pull request #98 from kula1922/feature/nie-przechodza-testy

Feature/nie przechodza testy
add invoice date to search
Merge pull request #99 from allegro/release/1.3.0

Release/1.3.0
Merge branch 'master' into hotfix/add-field-to-search-assets
change version
Merge pull request #100 from kula1922/hotfix/add-field-to-search-assets

Hotfix/add field to search assets
cores_count returns 0 instead of None
Remove back uppercase letter in CHANGES.rst
Merge pull request #101 from kula1922/hotfix/cores_count_returns_none

Hotfix/cores count returns none
Merge pull request #102 from allegro/master

Master
add few docstrings
Change test run command in travis file
fix run tests
Merge pull request #108 from kula1922/feature/add-travis-configuration

Change test run command in travis file
Merge pull request #104 from zefciu/decoupling

Decoupling
add few docstrings
Merge branch 'feature/add-few-docstring' of https://github.com/kula1922/ralph_assets into feature/add-few-docstring
Merge pull request #107 from kula1922/feature/add-few-docstring

add few docstrings
Separated models from DC and BO