Fixed issue default values halting WirePattern processing; resolves #212.

- InPort has a shiny new hasDefault method to identify if it has a default value.
- InPort no longer queues handleSocketEvent calls in sendDefault method.
- Component has a new startup method that calls each inPort's sendDefault method if available.
- Network attaches a socket to all defaulted inPorts similar to initials.
- Network initializes each component upon network start.
Renamed `startup` to `start` on Component.

 - Added defensive check on started state.
 - Verification of port attached state in Network.
 - New unit tests to support started state in Component.
Merge branch 'master' into feature/#212
Merge feature/#212 into master and applying latest commits.
Renamed `startupComponents` to `startComponents`.
Merge pull request #217 from hayesmg/master

PR to resolve #212