update get-field to return artwork type if it exists and modify tagging functions to ignore unsupported tags
README.md line ending commit
Merge branch 'master' into development
add tests and function to read artwork from audio files
add functionality to allow adding and updating artwork
add functionality to delete fields
add functionality to add album art from file, update documentation, increment version
remove DS_Store files and update gitignore
increment version and add info to deploy to clojars