Multiple Issues: Inaccurate notifications, editing doesn't remember settings, cron directory not created

I've wrestled with this plugin over multiple days and have found it has a number of problems:

• First, it doesn't create the vendor/fatfish/notification/cron directory on it's own. When you try to save your notification settings it displays an error about the missing directory. Create the directory and this error goes away.
• Second, you can create a "Craft Notification" (in my case i wanted to be notified when a specific entry type was created) and then later try to edit your notification and it appears to forget some of your settings. In my case I created "Element Type: Entries", "Section Type: Channel", "Entries: My Entry". When I go to edit my notification it forgets "Section Type" and "Entries" selections.
• Third, i get notifications for anything that is created or updated. I only wanted to get notified of specific entries when they are created.
• Fourth, the "Notification_update" field in the NotificationRecord table (mysql) gets set to null (instead of 1 or 0) when you set "notifications" to none in the interface.

This is not ready for prime time and don't think it should be in the plugin store. It simply does not work as expected if at all.