Skip control messages

• Don't block when consuming control-messages-only event batches
  This allows to clone exactly-once topic, but the target looses the contorl messages.

Compression codecs

• Corrected a bug that prevented cloning large batches of small-sized messages
• Implemented compression codecs (you can choose between the 4 standard values: none, gzip, snappy, lz4)
• Changed the hasher's shorthand (now 'p')

Cross-cluster cloning

• Implemented cross-cluster cloning
• Changed some parameter names / shorthands
• Added some verifications before actually cloning
• Various bugfixes

High-volume producer

This version contains a debugged producer (which was not supporting high-volume topics before).
The vendor folder has been removed from github.
The code is cleaner, some comments appeared and the README is finally up-to-date!
Also, we added a fancy .exe binary for windows users.

Async producer

The producing is now executed by batches, thanks to an async producer.
This greatly increases the cloning performances.

Code refactoring

• The code is now prettier :)
• Added a timeout parameter to let the user choose the value (default 10s)
• Added a default-hasher parameter to disable the use of the murmur2 hasher (still recommended)
• Added some verbose logs

Timeout

The cloning loop now timeouts after 10 seconds without cloning any new event.

Murmur hasher

Added murmur-based partitioning and a verbose mode

First release

Merge pull request #10 from ricardo-ch/timeout

Added timeout after 10 seconds