* Reduce memory usage
Reduce memory usage by discarding, not resetting, the frame data buffer.
Let delegate control copying.
* Delegate methods expect `self`
* Add `-sendWithoutCopyingData:error:`
* Add `-webSocket:shouldCopyReceivedData:`
* Update test script name in Makefile
* use a Swiftier name
* Fix error messages
* Remove `-webSocket:shouldCopyReceivedData:`
* Remove assertion
* Fix typo