A change in a Content Package will not be reflected in a Converted CP on a rebuild

After a successful content package conversion any change in a content package will not be reflected in a converted content package.

The reason is that the temporary generated file inside a temporary folder created in the VaultPackageAssembler is not deleted.

The CP Converter should at least provide a flag to force the deletion but maybe it is best to use a hash to see if the content has changed and if should delete the temporary folder.