The rename feature is not finding many instances that should be renamed, which it should be able to find fairly easily.
 False positives are one thing, because you can scroll through the occurances and say, well, I don't want to renamed
this one, etc.  However, missed instances will cause errors and crashes, some of which are not easily discoverable by a
human.

Here are the things I have seen that it doesn't find but should:

-module stuff-

class capitalizeme:
    def copy(self):
        return capitalizeme()

-module other1-
import stuff

stuff.capitalizeme(args)

-module other2-
from stuff import capitalizeme

capitalizeme(args)

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A rename of capitalizeme to Capitalizeme, will not rename any of the occurances of the class, except for the bare usage
of the class in the first module.  The solution I have been following is to do renames in 3 steps, the netbeans rename,
a find and replace of stuff.capitalizeme to stuff.Capitalizeme, and a find and replace of "from stuff import
capitalizeme" to "from stuff import Capitalizeme".  If catching this occurances is too much work, or until they do,
perhaps a warning can be printed for the rename to do those find and replace as well.