client.rb in async-http-0.31.1

- old
+ new

@@ -17,9 +17,10 @@
 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
 require 'async/io/endpoint'
+require 'async/io/stream'
 
 require_relative 'protocol'
 require_relative 'body/streamable'
 require_relative 'middleware'
 