Adding 'ZeroMQ' to text of gem summary to show match in search for 'zeromq' on rubygems.org
Bump to 1.6.3
Remove defunkt tarball extraction
Depend on a checkout task for submodule init
Bump to version 1.6.4
Adding ZMQ::Logger class
Adding ZMQ::Logger tests
Update ZMQ::Logger comments
Implementing frame wrapper object, and explicit tracking of ownership of messages and frames.

Messages now maintain a list of the ZMQ::Frame objects they own.
Fixes #21, also fixes #17
More portable loop code
Bump version to 1.7.0 and update change log
Fixing duplicate frame not resetting gone state
Sync changelog for 1.7.0 release
Fix frame still owned by message after message#pop
Fix missing GC mark method in ZMQ::Message
update changelog
Fix memory leak in ZMQ::Message
Fix GC mark message in rubinius
Updating license in gemspec and readme
Bump to version 1.7.1