text not updating geometry/layout when text is updated

[ngokevin]

Description:

Given a text container <a-entity text geometry="primitive: plane; height: auto" material>, continually update text.value with new lines. The height of the plane should automatically update, but it seems it might be stuck at the initial height of the text.

• A-Frame Version: 0.5.0 + master
• Platform / Device: desktop