Registry uses float, but doesn't handle precedence correctly

[JacobFV]

Suggestion

• use principles. The principles each adress only one aspect of the handler
• principles should be tunable and able to compare tradeoffs
• partial ordering principle: type hierarchy, semantic hierarchy
• specialization principle: type hierarchy. Maybe this is just one kind of semantic hierarchy

[JacobFV]

Maybe just use the most specialized subclass possible