[feature Request] level for breaking change be customizable

[LasneF]

@daveshanley there are 2 levels that could be applied

1. identify each rules via an identifier and have the capability to have flag : off; info, warning, breaking

2. capability for end user to add more rules leveraging, but this is munch more challenging

i think 1) one be good enough with a good catalog of breaking change detection , it should make the deal

[daveshanley]

I've been thinking about this and how to make it usable. Not quite baked in my mind yet however.

Comes under the same concept of #72

[LasneF]

may be for now not as custom , that requires a 'rules" engine to do so

but just that you can adjust the level on the current pre defined rules ,