add contribution for 0.7 and update changelog

[daniele-zurico]

update changelog and contribution

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (582c4ed) 100.00% compared to head (c935d45) 100.00%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## release/0.7 #445 +/- ## ============================================= Coverage 100.00% 100.00% ============================================= Files 50 50 Lines 1114 1114 Branches 442 442 ============================================= Hits 1114 1114 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Capgemini). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Capgemini)

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