0.07

Fixed a bug where 'shell' sessions would completely fail to work
Introduce COMMAND_DELAY to allow operators to change the client's session delay on-the-fly
Created a document on how to send bug reports
Other miscellaneous changes

0.06

Implemented tunneling, similar to "ssh -L", which is accessed on the server via the listen command
Added tools/dnstest.rb, a script to verify that the user actually own the domain.
Greatly improved performance when a lot of data is being transmitted from the server to the client
Fixed a bug where shared secrets (and other arguments) didn't work on the client if the user explicitly chose a driver type
Cleaned up the "create driver" logic on the client
BREAKING PROTOCL CHANGE: Made a change to the command protocol: the 16-bit request_id field was changed into packed_id, which has a 1-bit is_response value and a 15-bit request_id.

Re-wrote large parts of the server into way cleaner code
Significantly updated the documentation for the server
Removed reliance from rubydns, a built-in DNS server is now used for everything
Added a standalone tool, dnslogger.rb
There is now a "passthrough" option, which will forward any requests that dnscat2 doesn't know how to handle to an upstream server (somewhat stealthier, maybe?)

Re-wrote large parts of the client into cleaner code (for example, removed the entire message.* code, which was an awful, awful idea)
When multiple sessions are in progress, it's now "fair" (a message is sent every 'tick'; each session now takes turns sending out a message, rather than the oldest sessions blocking out younger ones
Removed some parameters that nobody will ever use from the commandline, like --name and --download (though --download may come back in another form!)
Changed the way a "tunnel driver" (ie, dns driver) is created on the commandline - it's now modeled after socat
The client will no longer transmit forever against a bad server - it will attempt to retransmit 10 times by default