| ⇢ | A | MemberIsNotOwnerException added |
| ⇢ | A | Circles::deleteCircle() added | |
| ⇢ | A | Circles::addMember() added | |
| ⇢ | A | MemberIsNotOwnerException::__construct() added | |
| ⇢ | A | Member::hasToBeOwner() added | |
| A | ↘ | B | Circle::getTypeString() got worse |
| A | ↘ | B | BaseMember::getLevelString() got worse |
| B | ↛ | Circle::typeString() removed | |
| B | ↛ | BaseMember::levelString() removed |