:arrow_up: Update SimplePie library to 1.5.

There is a new stable release, so upgrade from the dev branch to the new
1.5 release.

3 files changed, 63 insertions, 44 deletions

diff --git a/vendor/simplepie/simplepie/library/SimplePie.php b/vendor/simplepie/simplepie/library/SimplePie.php
index 890497204..428bfc068 100755
--- a/vendor/simplepie/simplepie/library/SimplePie.php
+++ b/vendor/simplepie/simplepie/library/SimplePie.php
@@ -5,7 +5,7 @@
  * A PHP-Based RSS and Atom Feed Framework.
  * Takes the hard work out of managing a complete RSS/Atom solution.
  *
- * Copyright (c) 2004-2016, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
+ * Copyright (c) 2004-2017, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification, are
@@ -33,8 +33,8 @@
  * POSSIBILITY OF SUCH DAMAGE.
  *
  * @package SimplePie
- * @version 1.4.3
- * @copyright 2004-2016 Ryan Parman, Geoffrey Sneddon, Ryan McCue
+ * @version 1.5
+ * @copyright 2004-2017 Ryan Parman, Geoffrey Sneddon, Ryan McCue
  * @author Ryan Parman
  * @author Geoffrey Sneddon
  * @author Ryan McCue
@@ -50,7 +50,7 @@ define('SIMPLEPIE_NAME', 'SimplePie');
 /**
  * SimplePie Version
  */
-define('SIMPLEPIE_VERSION', '1.4.3');
+define('SIMPLEPIE_VERSION', '1.5');
 
 /**
  * SimplePie Build
diff --git a/vendor/simplepie/simplepie/library/SimplePie/Category.php b/vendor/simplepie/simplepie/library/SimplePie/Category.php
index 92d511e1a..df0f13f9a 100644
--- a/vendor/simplepie/simplepie/library/SimplePie/Category.php
+++ b/vendor/simplepie/simplepie/library/SimplePie/Category.php
@@ -56,7 +56,7 @@ class SimplePie_Category
 	/**
 	 * Category identifier
 	 *
-	 * @var string
+	 * @var string|null
 	 * @see get_term
 	 */
 	var $term;
@@ -64,7 +64,7 @@ class SimplePie_Category
 	/**
 	 * Categorization scheme identifier
 	 *
-	 * @var string
+	 * @var string|null
 	 * @see get_scheme()
 	 */
 	var $scheme;
@@ -72,23 +72,36 @@ class SimplePie_Category
 	/**
 	 * Human readable label
 	 *
-	 * @var string
+	 * @var string|null
 	 * @see get_label()
 	 */
 	var $label;
 
 	/**
+	 * Category type
+	 * 
+	 * category for <category>
+	 * subject for <dc:subject>
+	 *
+	 * @var string|null
+	 * @see get_type()
+	 */
+	var $type;
+
+	/**
 	 * Constructor, used to input the data
 	 *
-	 * @param string $term
-	 * @param string $scheme
-	 * @param string $label
+	 * @param string|null $term
+	 * @param string|null $scheme
+	 * @param string|null $label
+	 * @param string|null $type
 	 */
-	public function __construct($term = null, $scheme = null, $label = null)
+	public function __construct($term = null, $scheme = null, $label = null, $type = null)
 	{
 		$this->term = $term;
 		$this->scheme = $scheme;
 		$this->label = $label;
+		$this->type = $type;
 	}
 
 	/**
@@ -109,14 +122,7 @@ class SimplePie_Category
 	 */
 	public function get_term()
 	{
-		if ($this->term !== null)
-		{
-			return $this->term;
-		}
-		else
-		{
-			return null;
-		}
+		return $this->term;
 	}
 
 	/**
@@ -126,31 +132,32 @@ class SimplePie_Category
 	 */
 	public function get_scheme()
 	{
-		if ($this->scheme !== null)
-		{
-			return $this->scheme;
-		}
-		else
-		{
-			return null;
-		}
+		return $this->scheme;
 	}
 
 	/**
 	 * Get the human readable label
 	 *
+	 * @param bool $strict
 	 * @return string|null
 	 */
-	public function get_label()
+	public function get_label($strict = false)
 	{
-		if ($this->label !== null)
-		{
-			return $this->label;
-		}
-		else
+		if ($this->label === null && $strict !== true)
 		{
 			return $this->get_term();
 		}
+		return $this->label;
+	}
+
+	/**
+	 * Get the category type
+	 *
+	 * @return string|null
+	 */
+	public function get_type()
+	{
+		return $this->type;
 	}
 }
 
diff --git a/vendor/simplepie/simplepie/library/SimplePie/Item.php b/vendor/simplepie/simplepie/library/SimplePie/Item.php
index 89d4bacb6..00f4179bf 100644
--- a/vendor/simplepie/simplepie/library/SimplePie/Item.php
+++ b/vendor/simplepie/simplepie/library/SimplePie/Item.php
@@ -206,9 +206,10 @@ class SimplePie_Item
 	 *
 	 * @since Beta 2
 	 * @param boolean $hash Should we force using a hash instead of the supplied ID?
-	 * @return string
+	 * @param string|false $fn User-supplied function to generate an hash
+	 * @return string|null
 	 */
-	public function get_id($hash = false, $fn = '')
+	public function get_id($hash = false, $fn = 'md5')
 	{
 		if (!$hash)
 		{
@@ -237,7 +238,15 @@ class SimplePie_Item
 				return $this->sanitize($this->data['attribs'][SIMPLEPIE_NAMESPACE_RDF]['about'], SIMPLEPIE_CONSTRUCT_TEXT);
 			}
 		}
-		if ($fn === '' || !is_callable($fn)) $fn = 'md5';
+		if ($fn === false)
+		{
+			return null;
+		}
+		elseif (!is_callable($fn))
+		{
+			trigger_error('User-supplied function $fn must be callable', E_USER_WARNING);
+			$fn = 'md5';
+		}
 		return call_user_func($fn,
 		       $this->get_permalink().$this->get_title().$this->get_content());
 	}
@@ -460,7 +469,8 @@ class SimplePie_Item
 	{
 		$categories = array();
 
-		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'category') as $category)
+		$type = 'category';
+		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, $type) as $category)
 		{
 			$term = null;
 			$scheme = null;
@@ -477,9 +487,9 @@ class SimplePie_Item
 			{
 				$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_HTML);
 			}
-			$categories[] = $this->registry->create('Category', array($term, $scheme, $label));
+			$categories[] = $this->registry->create('Category', array($term, $scheme, $label, $type));
 		}
-		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'category') as $category)
+		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, $type) as $category)
 		{
 			// This is really the label, but keep this as the term also for BC.
 			// Label will also work on retrieving because that falls back to term.
@@ -492,15 +502,17 @@ class SimplePie_Item
 			{
 				$scheme = null;
 			}
-			$categories[] = $this->registry->create('Category', array($term, $scheme, null));
+			$categories[] = $this->registry->create('Category', array($term, $scheme, null, $type));
 		}
-		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'subject') as $category)
+
+		$type = 'subject';
+		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, $type) as $category)
 		{
-			$categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_HTML), null, null));
+			$categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_HTML), null, null, $type));
 		}
-		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'subject') as $category)
+		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, $type) as $category)
 		{
-			$categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_HTML), null, null));
+			$categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_HTML), null, null, $type));
 		}
 
 		if (!empty($categories))