Added workaround for weird focus-stealing behaviour in Maya.
Added application variable to the scope available to the screen grab command.
Added root parameter to all path constructors. This is used to define the root when the path parameter is passed a list of items. Because python doesn’t allow overloaded functions this is slightly awkward - see documentation of Path.init for discussion of how this would break down into overloaded constructors when we move the implementation to C++.
Added Path.root() and Path.isEmpty() methods.
Added Path.setFromPath() method, which copies the elements and the root from another path. This should be used in place of code which formerly did path[:] = otherPath[:].
Note that the new root parameter changes the parameter order for all Path (and derived class) constructors - if you were formerly passing a filter as a non-keyword argument you should now pass it as a keyword argument to avoid problems. Additionally, if you implemented a custom Path subclass, you need to add the root parameter to your constructor and update your copy() and children() implementations. The DictPath changes provide a minimal example of what needs changing.