Simplified call filtering

Feels like a big step forward in simplicity and power, emerging from the realisation that if a matcher is used to filter as a matcher after it's already been used to filter as a name of a route, then this will be a noop because only calls that satisfy the matcher will be included in the list to filter further

• matches using name (or inferred identifier) first
• If no routes have it as a name or identifier, just execute as a matcher
• Finally, if there are options provided filter further by executing these as a route

Easier to think about, document and implement

Also removed filtering by method from .done() - in hindsight this was a poor idea to ever add