v0.4.0

Major Enhancements

• Make pattern field types statically-known, eliminate VInt from the public API (#118)
• Expose all common pseudoports in abstraction layer (#120)

Minor Enhancements

• Add packet out to abstraction layer (#119)
• Extend logging interface to dynamically add output tags (#121)
• Move pattern type to its own module, implement and test lattice operations (#126)

Bug Fixes

• Fix controller crash on unexpected disconnect during OpenFlow handshake (#115)
• Fix copypasta bug involving ipSrc/Dst (#122)

Maintenance

• Remove unused ClientServer API (#116)
• Rename Trans module to Stage and make it a child of Async_OpenFlow (#117)
• Perform proper physical port number validation (#119)
• Make the library compatible with async.111.13.00 (#124)