Comment 1 for bug 881283

The way to do this is to subclass the Reporter imported from pocketlint. The new class would accept a message_level argument to indicate if error or errors and warnings are wanted. The plugin will also need a setting page/menu option for the user to set the message_level.

There are also cases when working with multiple document types that you want to disable checking for one document. This might be out of scope, but would certainly prevent the side panel from changing when you are editing a document where your focus is on the side panel.