[cloudkitty] Proposing Mariusz Karpiarz as a CloudKitty core reviewer

Hello guys, I would like to propose Mariusz Karpiarz (mkarpiarz) to be a new member of the CloudKitty core team. Mariusz has been working consistently in CloudKitty for quite some time already. He is actively reviewing and proposing patches. Moreover, he is always present in the bi-weekly meeting to discuss and trace CloudKitty's future. I think that he will be a great addition to our (not too big) core team. I will open this nomination open for a week to get feedback about it. Please give your +1/-1 in the next coming days. -- Rafael Weingärtner