The center part is not rotated when there center part is used rotated at the side by the rule

[aleksandrbazhin]

Example: the center part is used rotated in the left side of the subtile, but the center part itself s never rotated now. There is a visible division between rotated and non-rotated parts.

Possible solutions:

• if there are rotated parts in the rule (with index 0), use the first encountered rotation (we won't be able to satisfy multiple ones anyway)
• add 9th parameter to every rule - to be able to change the center. Benefits - more understandable rule format. We can also flip center if we need. Minuses: breaking change.