The way the messages were buffered caused interspersed messages to be
inserted in the middle of CopyData messages disrupting the normal COPY
TO flow.
This fixes it by consuming (adjusting offsets as appropriate) and just
logging them to console, effectively discarding them from the COPY
flow.
* Eliminate detach/reattach strategy as it isn't able to differentiate between on/once and inconsistenly loses unshifted data depending on node version. Instead just split stream and send it to copy stream and the connection.stream at the same time. Disconnecting copy stream just means unpiping. Added handleCopyData to fulfill query contract but ignore the incoming data.
Add node 4.2.2 to Travis
Minimum postgres 9.2 to allow tests to complete in Travis
Remove test that is no longer needed since we no longer disconnect/reconnect listeners
* Add resume
* Remove node 0.10 and add 0.12
* Re-enable old tests
* Add more versions to the travis test matrix
