add anchorMedia option to dial verb

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@jambonz/verb-specifications",
-  "version": "0.0.11",
+  "version": "0.0.12",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@jambonz/verb-specifications",
-      "version": "0.0.11",
+      "version": "0.0.12",
       "license": "MIT",
       "dependencies": {
         "debug": "^4.3.4",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@jambonz/verb-specifications",
-  "version": "0.0.11",
+  "version": "0.0.12",
   "description": "Jambonz Verb Specification Utilities",
   "main": "index.js",
   "scripts": {

specs.json

@@ -202,6 +202,7 @@
       "dtmfCapture": "object",
       "dtmfHook": "object|string",
       "headers": "object",
+      "anchorMedia": "boolean",
       "listen": "#listen",
       "target": ["#target"],
       "timeLimit": "number",