Removed Issue::remove() as is deprecated + some tidy ups

Author: m4tthumphrey

lib/Gitlab/Api/Issues.php

@@ -29,11 +29,6 @@ public function update($project_id, $issue_id, array $params)
         return $this->put('projects/'.urlencode($project_id).'/issues/'.urlencode($issue_id), $params);
     }
 
-    public function remove($project_id, $issue_id)
-    {
-        return $this->delete('projects/'.urlencode($project_id).'/issues/'.urlencode($issue_id));
-    }
-
     public function addComment($project_id, $issue_id, array $params)
     {
         return $this->post('projects/'.urlencode($project_id).'/issues/'.urlencode($issue_id).'/notes', $params);

lib/Gitlab/Model/Issue.php

@@ -70,11 +70,11 @@ public function close($comment = null)
         ));
     }
 
-    public function remove()
+    public function open()
     {
-        $this->api('issues')->remove($this->project->id, $this->id);
-
-        return true;
+        return $this->update(array(
+            'state_event' => 'reopen'
+        ));
     }
 
     public function addComment($body)

lib/Gitlab/Model/Project.php

@@ -348,11 +348,18 @@ public function updateIssue($id, array $params)
         return $issue->update($params);
     }
 
-    public function removeIssue($id)
+    public function closeIssue($id, $comment = null)
     {
         $issue = new Issue($this, $id, $this->getClient());
 
-        return $issue->remove();
+        return $issue->close($comment);
+    }
+
+    public function openIssue($id)
+    {
+        $issue = new Issue($this, $id, $this->getClient());
+
+        return $issue->open();
     }
 
     public function milestones($page = 1, $per_page = Api::PER_PAGE)