Apply "pending" matrix in group when it receives content.
Remove need for _needsRedraw() calls by replacing it with a boolean flag.
Unbox project data in Project#importJSON(), as we don't want to create a new project object.
Make sure project we import into is active.
Remove all create() constructors for basic types since new constructors are now faster.

Woop!
Rename options.server to options.node
Merge git://github.com/paperjs/paper.js