Tons of lines and garbage collector
When there is many dynamic lines:
https://gist.github.com/honix/e94f42eb24e62a2ade8cbb45ab8b9df1

Sketch becomes little laggy because of GC hard work. So, for now i down `*shape-cache-capacity*` to zero and have smooth animation. I think it needs to rethink caches somehow..
