Alias Twitter::Tweet#reply? to Twitter::Tweet#in_reply_to_user_id?

Before this patch, manual replies (created without pressing a reply
button) would return false, since they do not have an
in_reply_to_status_id.

lib/twitter/tweet.rb

@@ -13,7 +13,7 @@ class Tweet < Twitter::Identity
     deprecate_alias :favorites_count, :favorite_count
     deprecate_alias :favoriters_count, :favorite_count
     alias_method :in_reply_to_tweet_id, :in_reply_to_status_id
-    alias_method :reply?, :in_reply_to_status_id?
+    alias_method :reply?, :in_reply_to_user_id?
     deprecate_alias :retweeters_count, :retweet_count
     object_attr_reader :GeoFactory, :geo
     object_attr_reader :Metadata, :metadata

spec/twitter/tweet_spec.rb

@@ -270,11 +270,11 @@
   end
 
   describe '#reply?' do
-    it 'returns true when there is an in-reply-to status' do
-      tweet = Twitter::Tweet.new(:id => 28_669_546_014, :in_reply_to_status_id => 114_749_583_439_036_416)
+    it 'returns true when there is an in-reply-to user' do
+      tweet = Twitter::Tweet.new(:id => 28_669_546_014, :in_reply_to_user_id => 7_505_382)
       expect(tweet.reply?).to be true
     end
-    it 'returns false when in_reply_to_status_id is not set' do
+    it 'returns false when in_reply_to_user_id is not set' do
       tweet = Twitter::Tweet.new(:id => 28_669_546_014)
       expect(tweet.reply?).to be false
     end