v2.1.0

The highlight of this release is a Command Line Interface (CLI) for the Universal Radio Hacker.
Learn more about this new feature in the wiki.

Moreover, these two features were added:

• Add export features #437
• make refin and refout configurable for CRC #439

These bugs were fixed:

• fix #441 (Reference signal is not kept when disabling and re-enabling "Mark diffs in protocol")
• fix #442 (consider hidden zeros for show selection in interpretation)
• fix #444 (Message Break error box popping up too early)
• fix #448 (Include pyaudio in windows package for soundcard support)