v0.5.0

• support for raw dictionaries (i.e. dictionaries with non-utf8 keys)
• several tracker response structs (see #2)
• some refactoring work

v0.4.0

• BREAKING CHANGE: announce field is now optional for Torrent (see #1)
• code cleanup
• minor documentation fixes
• upgraded rand (to 0.7.2), itertools (to 0.8.0), and other dependencies

v0.3.0

• revamped error type
• fixed file size handling
• more generic bencoding methods
• upgraded rand version
• code formatting + style enhancements
• several minor performance fixes