Fix issueRequests vars and make issue order consistent.

lib/issue.js

@@ -92,7 +92,7 @@ async function _createIssueRequests({
         variables: {
           // always include globals but allow local override
           globals: variables.globals,
-          ...r.variables
+          ...vars
         }
       };
     }));
@@ -125,10 +125,8 @@ async function _issue({workflow, issueRequests, format} = {}) {
       '/issue' : '/credentials/issue';
   }
 
-  const issuedVCs = [];
-
   // issue VCs in parallel
-  await Promise.all(issueRequests.map(async issueRequest => {
+  return Promise.all(issueRequests.map(async issueRequest => {
     /* Note: Issue request formats can be any one of these:
 
     1. `{credential, options?}`
@@ -141,8 +139,6 @@ async function _issue({workflow, issueRequests, format} = {}) {
     const {
       data: {verifiableCredential}
     } = await zcapClient.write({url, capability, json});
-    issuedVCs.push(verifiableCredential);
+    return verifiableCredential;
   }));
-
-  return issuedVCs;
 }