v0.8.0

New features and improvements:

• N-SET and N-CREATE messages, SCU and SCP
• Support of Python 3
• store command for the command-line application
• Move semantics (data structures, reader, writer, SCU and SCP)
• Dictionary version 2017a

Bug fixes:

• Tags can be used as Python dictionary keys
• Fix access to empty elements
• Fix Appveyor CI

Thanks to @cguebert, @edouard-mangel, @fbridault, @ThibautSchmitt!