feat(errors): log errors to console

Catch errors coming from the application to let the
developer know when there are issues occuring they
may otherwise not be aware of.
Attempts to log the stack trace when possible.

closes #24

src/index.js

@@ -23,6 +23,11 @@ const callDrivers =
     return sources
   }
 
+const noop = () => {}
+
+const logErrorToConsole =
+  err => console.error(err.stack || err)
+
 const replicateMany =
   (sinks, sinkProxies) =>
     setTimeout(
@@ -31,7 +36,10 @@ const replicateMany =
           if (sinks.hasOwnProperty(name) &&
           sinkProxies.hasOwnProperty(name))
           {
-            sinks[name].forEach(sinkProxies[name].sink.add)
+            sinks[name]
+              .forEach(sinkProxies[name].sink.add)
+              .then(noop)
+              .catch(logErrorToConsole)
           }
         }
       }