New features to go-lighly.core from doing google search example.

go-lightly.core changes
* Added a "buffered channel" - passing a positive number
  to go-channel creates a fixed size LinkedBlockingQueue
  rather than a LinkedTransferQueue
* Added channel to collection conversions
  * channel->vec: vec with all vals on the queue *without* draining
  * channel->seq: seq with all vals on the queue *without* draining
  * drain-to-vec: vec with all vals on the queue, draining channel
  * TODO: still need to add channel->lazy-seq and/or drain-to-lazy-seq

Examples:
* google-lamina and google (with go-lightly) search examples complete