Patch to implement "Past-due" view on Action Scheduler list table

patch.diff

diff --git a/classes/ActionScheduler_ListTable.php b/classes/ActionScheduler_ListTable.php
index b680054..d12667e 100644
--- a/classes/ActionScheduler_ListTable.php
+++ b/classes/ActionScheduler_ListTable.php
@@ -559,6 +559,11 @@ class ActionScheduler_ListTable extends ActionScheduler_Abstract_ListTable {
 			'search'   => $this->get_request_search_query(),
 		);
 
+		if ( 'past-due' === $this->get_request_status() ) {
+			$query['status'] = ActionScheduler_Store::STATUS_PENDING;
+			$query['date'] = as_get_datetime_object();
+		}
+
 		$this->items = array();
 
 		$total_items = $this->store->query_actions( $query, 'count' );
diff --git a/classes/data-stores/ActionScheduler_DBStore.php b/classes/data-stores/ActionScheduler_DBStore.php
index d70e4ce..bfa4f85 100644
--- a/classes/data-stores/ActionScheduler_DBStore.php
+++ b/classes/data-stores/ActionScheduler_DBStore.php
@@ -432,6 +432,14 @@ class ActionScheduler_DBStore extends ActionScheduler_Store {
 			}
 		}
 
+		$pastdue_actions_count = $this->query_actions( array(
+			'status' => ActionScheduler_Store::STATUS_PENDING,
+			'date' => as_get_datetime_object(),
+		), 'count' );
+
+		if ( !empty( $pastdue_actions_count ) )
+			$actions_count_by_status['past-due'] = $pastdue_actions_count;
+
 		return $actions_count_by_status;
 	}