Can koa-convert be updated 
Currently, koa depends on 2 koa-compose, one v3 and one v4. The v3 is coming from the old koa-convert, and it is pulling the blue-bird. Can this be fix now?
![Screenshot 2019-04-18 at 08 15 04](https://user-images.githubusercontent.com/21156791/56338485-e1b02080-61b2-11e9-9b95-ba6c6ee9f924.png)
 
https://github.com/koajs/convert/pull/11/files

Best 