feat(youtube): update the api

#### youtube:v3

The following keys were deleted:
- resources.channels.methods.list.parameters.forHandle (Total Keys: 2)
- resources.search.methods.list.parameters.relatedToVideoId (Total Keys: 2)

The following keys were added:
- resources.playlistImages.methods.delete (Total Keys: 10)
- resources.playlistImages.methods.insert (Total Keys: 15)
- resources.playlistImages.methods.list (Total Keys: 24)
- resources.playlistImages.methods.update (Total Keys: 13)
- schemas.PlaylistImage (Total Keys: 23)

Author: yoshi-automation

docs/dyn/youtube_v3.channels.html

@@ -78,7 +78,7 @@ <h2>Instance Methods</h2>
   <code><a href="#close">close()</a></code></p>
 <p class="firstline">Close httplib2 connections.</p>
 <p class="toc_element">
-  <code><a href="#list">list(part, categoryId=None, forHandle=None, forUsername=None, hl=None, id=None, managedByMe=None, maxResults=None, mine=None, mySubscribers=None, onBehalfOfContentOwner=None, pageToken=None, x__xgafv=None)</a></code></p>
+  <code><a href="#list">list(part, categoryId=None, forUsername=None, hl=None, id=None, managedByMe=None, maxResults=None, mine=None, mySubscribers=None, onBehalfOfContentOwner=None, pageToken=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Retrieves a list of resources, possibly filtered.</p>
 <p class="toc_element">
   <code><a href="#list_next">list_next()</a></code></p>
@@ -93,13 +93,12 @@ <h3>Method Details</h3>
 </div>
 
 <div class="method">
-    <code class="details" id="list">list(part, categoryId=None, forHandle=None, forUsername=None, hl=None, id=None, managedByMe=None, maxResults=None, mine=None, mySubscribers=None, onBehalfOfContentOwner=None, pageToken=None, x__xgafv=None)</code>
+    <code class="details" id="list">list(part, categoryId=None, forUsername=None, hl=None, id=None, managedByMe=None, maxResults=None, mine=None, mySubscribers=None, onBehalfOfContentOwner=None, pageToken=None, x__xgafv=None)</code>
   <pre>Retrieves a list of resources, possibly filtered.
 
 Args:
   part: string, The *part* parameter specifies a comma-separated list of one or more channel resource properties that the API response will include. If the parameter identifies a property that contains child properties, the child properties will be included in the response. For example, in a channel resource, the contentDetails property contains other properties, such as the uploads properties. As such, if you set *part=contentDetails*, the API response will also contain all of those nested properties. (required) (repeated)
   categoryId: string, Return the channels within the specified guide category ID.
-  forHandle: string, Return the channel associated with a YouTube handle. UNIMPLEMENTED.
   forUsername: string, Return the channel associated with a YouTube username.
   hl: string, Stands for &quot;host language&quot;. Specifies the localization language of the metadata to be filled into snippet.localized. The field is filled with the default metadata if there is no localization in the specified language. The parameter value must be a language code included in the list returned by the i18nLanguages.list method (e.g. en_US, es_MX).
   id: string, Return the channels with the specified IDs. (repeated)

docs/dyn/youtube_v3.html

@@ -159,6 +159,11 @@ <h2>Instance Methods</h2>
 </p>
 <p class="firstline">Returns the membershipsLevels Resource.</p>
 
+<p class="toc_element">
+  <code><a href="youtube_v3.playlistImages.html">playlistImages()</a></code>
+</p>
+<p class="firstline">Returns the playlistImages Resource.</p>
+
 <p class="toc_element">
   <code><a href="youtube_v3.playlistItems.html">playlistItems()</a></code>
 </p>