add 0.12 deprecation warnings

Author: yyx990803

src/util/debug.js

@@ -46,6 +46,23 @@ function enableDebug () {
    */
 
   exports.assertAsset = function (val, type, id) {
+    /* istanbul ignore if */
+    if (type === 'directive') {
+      if (id === 'component') {
+        exports.warn(
+          'v-component has been deprecated in 0.12. ' +
+          'Use custom element syntax instead.'
+        )
+        return
+      }
+      if (id === 'with') {
+        exports.warn(
+          'v-with has been deprecated in 0.12. ' +
+          'Use props instead.'
+        )
+        return
+      }
+    }
     if (!val) {
       exports.warn('Failed to resolve ' + type + ': ' + id)
     }

src/util/options.js

@@ -123,6 +123,18 @@ strats.props = function (parentVal, childVal) {
     : parentVal
 }
 
+/**
+ * 0.11 deprecation warning
+ */
+
+strats.paramAttributes = function () {
+  /* istanbul ignore next */
+  _.warn(
+    '"paramAttributes" option has been deprecated in 0.12. ' +
+    'Use "props" instead.'
+  )
+}
+
 /**
  * Assets
  *