actix-files: v0.6.0-beta.5

• NamedFile now implements ServiceFactory and HttpServiceFactory making it much more useful in routing. For example, it can be used directly as a default service. #2135
• For symbolic links, Content-Disposition header no longer shows the filename of the original file. #2156
• Files::redirect_to_slash_directory() now works as expected when used with Files::show_files_listing(). #2225
• application/{javascript, json, wasm} mime type now have inline disposition by default. #2257
• Files::show_files_listing() can now be used with Files::index_file() to show files listing as a fallback when the index file is not found. #2228