After installation remove (if it exists) the *.cue exclusion from the list at Preferencess -> Shell Integration -> Exclude file types

- Removes duplicate song entries that appear when adding adirectory containing a .cue file that links to timestamps in a base .flac/.wav/.ape file.
- Removes such duplicates also when adding tracks from media library.
- Removes broken .cue files that point to missing files (.flac/.wav/.ape etc).

- Use case insensitive path compare on Windows (fix #15)
- Use semantic versioning
Remove "*.CUE" from preferencess->shell integration->exclude file types