Bumping protocol-http1 and updating hijack check

Author: Anton Zhuravsky

async-http.gemspec

@@ -23,7 +23,7 @@ Gem::Specification.new do |spec|
 	spec.add_dependency "async-io", ">= 1.28"
 	spec.add_dependency "async-pool", ">= 0.2"
 	spec.add_dependency "protocol-http", "~> 0.26.0"
-	spec.add_dependency "protocol-http1", "~> 0.18.0"
+	spec.add_dependency "protocol-http1", "~> 0.19.0"
 	spec.add_dependency "protocol-http2", "~> 0.16.0"
 	spec.add_dependency "traces", ">= 0.10.0"
 end

lib/async/http/protocol/http1/connection.rb

@@ -18,7 +18,6 @@ def initialize(stream, version)
 
 						@ready = true
 						@version = version
-						@hijacked = false
 					end
 
 					attr :version
@@ -48,15 +47,6 @@ def peer
 					def concurrency
 						1
 					end
-
-					def hijack!
-						@hijacked = true
-						super
-					end
-
-					def hijacked?
-						@hijacked
-					end
 
 					# Can we use this connection to make requests?
 					def viable?