Adapters should be loaded automatically

[michaelkipper]

A conversation with @rafaelfranca turned into: Why not have the "built-in" adapters load automatically?

This would be a breaking change but would reduce the barrier to verifying that Semian is being used correctly.

WDYT?

cc: @sirupsen, @csfrancis, @fw42

[fw42]

I don't have a strong opinion, but as far as I know just loading the adapter doesn't actually enable any functionality yet (that has to be done via passing in configuration options when initializing the clients, right?).

[michaelkipper]

So it seems that looking for runtime logs of type Semian is not configured for #{self.class.name}: #{semian_identifier}" would be the best course of action. Having adapters load automatically would just increase log noise, and not actually enable Semians.