v0.7.0 Object Manager added. Great performance optimisation

If you have a lot of markers on your map i strongly recommend you to use map attribute useObjectManager. But in this case you can't set callbacks to your markers through marker attribute callbacks.

<yandex-map> has a class ymap-container and child element, where rendering map instance. Child class you may define through map attribute ymap-class. If you doesn't define this class - child element will have style attribute with width: 100%; height: 100%;