title: How to add a new column to an existing entity with typeorm
body: <p>I am starting to study typeorm and I am confused about what happens if I add a new column to an existing entity that was already persisted with data. I use SQlite.</p>
  
  <p>I saw in the documentation, in the "Migrations" section, it looks like there is a procedure that must be done if I want to add a new column.</p>
  
  <p>But when I saw <a href="https://github.com/typeorm/typeorm/issues/157" rel="noreferrer">this issue in typeorm's github</a>, I understood that if I just add the new "@Column" annotated property to the Entity class would be enough and typeorm would create the column automatically when the app starts.</p>
  
  <p>I was really hoping that typeorm would be able to handle that schema change automatically.</p>
  
  <p>Can someone help?</p>