Update auto-fill

I implemented a better way to do this kind of auto-fills by passing in the current item data to the `default` function in `cdocparser@0.3.6`. 

I updated the `@content` auto-fill and added a `@throws` autofill (#238). 
There is currently a workaround in place because I need to make a breaking change in cdocparser so we need to delay that to SassDoc 2.0.