Added functionality for IDLE command

[seruum]

Modified send procedure to not allow tags to be created (continuation command)
added idle and done procedures

Code to use idle command with 70 second timeout

block:
    echo "IDLING"
    let resp = client.idle()
    let done = waitFor resp.withTimeout(70000)
    if not done: # Timeout occurred
      echo "DONE WAITING"
      discard waitFor client.done()
    echo waitFor resp
    echo " "