Resolve #202 and add a unit test and acceptance test.
Merge pull request #203 from dnephin/release_0.5.2

Resolve #202 and add a unit test and acceptance test.
Log an informative error when we're missing a local channel.
Merge pull request #205 from dnephin/42_fix_ssh_channel_request_exception_take_2

Log an informative error when we're missing a local channel.
Adding a MappingCollection.replace()
Merge pull request #206 from dnephin/0.6_node_pool_and_event_cleanup

node pool and event cleanup
Merge branch 'release_0.6' of github.com:Yelp/Tron into 199_verify_host_key
Merge branch 'master' of github.com:Yelp/Tron into release_0.6
Remove old dev script which was replaced with pyauotest.
Merge branch 'release_0.6' of github.com:Yelp/Tron into 199_verify_host_key
Validate known hosts file in config, and fix an error with Mappingcollection.replace()
Adding tests for tron.ssh.ClientTransport
Merge pull request #207 from dnephin/199_verify_host_key

Verify Host Key and SSH config options
Merge branch 'master' of github.com:dnephin/Tron into 0.6_replace_reactor_with_eventloop
Fix teardown for mongodb tests.