"SocketGroup" now supports a number to specify the number of sockets in a link. By default (operator =) the number requires an exact match.
"SocketGroup" allows combining a number and colours, e.g. "5GGG" will show 5-links with at least 3 green sockets.
"SocketGroup" now supports relational operators (>, <, >=, <=) in addition to exact equal (==), e.g. " >= 5GGG" shows items with 5 or more linked sockets with at least 3 of them being green sockets. "== 5GGG" shows items with a 5-link that has exactly 3 green sockets, but won't show 6-links.