add support for sip_refer verb

lib/jambonz/specs.json

@@ -9,6 +9,17 @@
       "status"
     ]
   },
+  "sip_request": {
+    "properties": {
+      "method": "string",
+      "body": "string",
+      "headers": "object",
+      "actionHook": "object|string"
+    },
+    "required": [
+      "method"
+    ]
+  },
   "sip_refer": {
     "properties": {
       "referTo": "string",

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@jambonz/node-client",
-  "version": "0.3.15",
+  "version": "0.3.18",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@jambonz/node-client",
-      "version": "0.3.15",
+      "version": "0.3.18",
       "license": "MIT",
       "dependencies": {
         "bent": "^7.3.12",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@jambonz/node-client",
-  "version": "0.3.17",
+  "version": "0.3.18",
   "description": "Node.js client for building jambonz applications (jambonz.org)",
   "main": "lib/index.js",
   "scripts": {