Register the SingleFileGeneratorNodeExtenderProvider in a manner that is safe for multiple ProjectPackage instances (fixes #4)
Allow SingleFileGeneratorNodeExtenderProvider to work with custom CATIDs (fixes #7)
Implement support for the SLNREFRESH command by toggling Show All Files twice (fixes #5)
Fix COMException when the CATID for the FileNode browse object is customized (fixes #6)
Fix errors which can occur when removing items from the project
Merge pull request #11 from sharwell/multiple-fixes

Multiple fixes