Any chance to let this be optional? I really liked the old way. 

Yes, but right now there's just one time. Last time I downloaded the hebcal shabat would be an event with the start time and the 18 minutes limit later. 

For example, if shabat really started at 16:18, I would get an event like: 

16:00 -> 16:18

So this way I could know when I should be prepared to shabat and when should be limit. Right now I only get an event saying 16:00 and that's it. 

It makes easier than doing the math, specially when I am driving back home, trying to figure when does shabat starts if the event only says "17:13".