Altered ldt_annotate serializer to allow for serializing id for editing annotation + Added Markers widget that allows to make and edit 0 duration annotations.
<?php
$data = json_decode(file_get_contents("php://input"));
if (!isset($data->annotations[0]->id)) {
$data->annotations[0]->id = uniqid("annotation_");
}
if (!isset($data->annotations[0]->type)) {
$data->annotations[0]->type = uniqid("annotationType_");
}
print_r(json_encode($data));
?>