v0.7.2.
Added tests for polling in pubsub mode and monitoring mode.
Fixed #getReply, it should call #getMessage if no cmd was popped;
it is useful in monitoring or pubsub mode, for sending commands
without pushing to queue, like for polling mechanism, in which PING
commands should not be present in the rollback queue.
Fixed connection.js code.
..
On branch master
modified:   lib/deuces.js
modified:   lib/tasks/connection.js
modified:   package.json
new file:   test/monitor-mode-polling-task-test.js
renamed:    test/tasks-polling-test.js -> test/normal-mode-polling-task-test.js
new file:   test/pubsub-mode-polling-task-test.js