Add test ensuring that JDK assertions are enabled
Remove jzmq dependency (in favor of jeromq)
Add various experiments in lightweight node design
Experiment further with node design
Fix typos
Add Guava 17.0

In order to pick up:

 - MoreExecutors, esp. sameThreadExecutor
 - Preconditions
 - Very likely other utilities in the future
Break up components into new 'node' package
Experiment further with node design
Fix misplaced header comment
Add Jalopy formatter settings

Based on jalopy-trial-setup-1.9.5_322.jar
Format sources with Jalopy

See previous commit in which the formatting configuration is exported.
Add 'items' manually to Node's collection
Configure Jalopy to format on save
Avoid closing shared (inproc) ZMQ contexts
Start and stop second node
Attempt to add peer (connect) and cause to hang
Remove (most) node experimentation
Further simplify before switching to high-level API
Simplify node implementation with high-level ZMQ API
Add naive Network abstraction

Capable of:

 - Discovering the current node's address
 - Discovering other peers on the network