Merge pull request #348 from giovannicalo/master

Added support for Node 13

Author: lgeiger

.travis.yml

@@ -4,6 +4,7 @@ node_js:
 - "8"
 - "10"
 - "11"
+- "13"
 sudo: required
 
 matrix:

binding.cc

@@ -1297,8 +1297,8 @@ namespace zmq {
         }
       }
 
-      Local<Object> buf = batch->Get(i).As<Object>();
-      Local<Number> flagsObj = batch->Get(i + 1).As<Number>();
+      Local<Object> buf = batch->Get(Nan::GetCurrentContext(), i).ToLocalChecked().As<Object>();
+      Local<Number> flagsObj = batch->Get(Nan::GetCurrentContext(), i + 1).ToLocalChecked().As<Number>();
 
       int flags = Nan::To<int>(flagsObj).FromJust();