sugar prevent crashing if field not found

I am using sugar library for saving data and I facing a serious issue, if we add new filed it is crashing or it showing error. Our table fields will change in any time , so it is unsafe to use sugar because if we have 10k downloads for our app and only 10% people will update our app. if sugar keeps crashing like this we cant add new features. Is there any other option available?
How to add code for sugar that alter table if new table field found?