Support namespaces

[kdambekalns]

When working with a namespaced codebase, the tool is of limited use. Here are some examples:

Renaming Exception to RenamedException changes too much (i.e. all Exception classes, but not all that's needed, so that class Exception extends \TYPO3\Fluid\Core\Exception becomes class RenamedException extends \TYPO3\Fluid\Core\Exception.

Using fully qualified class names matches only uses in docblocks, it seems. At least fully qualified use in code is left unchanged.

What should happen, is that renaming Some\Namespaced\Class to Some\Namespaced\DifferentName should just work. :)

[iangreenleaf]

Agree, this would be very nice. Unfortunately, I'm not putting a lot of time into Scisr development at this point. I'd definitely accept a pull request, though :)

[kdambekalns]

I whipped up some tests already and am currently looking into how Scisr actually works on the inside.