• Add Markdown target (Eric Forgeot, #213).
• Drop --encoding option and always use UTF-8. Files in other encodings are not supported anymore (Jendrik Seipp, Aurelio Jargas, #221).
• Show the original error message when a file read/write operation fails (Aurelio Jargas, #216 #217).
• Improve the exception handling when reading input data from files and from stdin (Aurelio Jargas, #218 #219).