Merge pull request #120 from DavidVorick/pos

Basic Cleanup
Merge pull request #125 from DavidVorick/update

Switch to Update Model
close rpc connections (do'h). Fixes #124
Merge pull request #129 from lukechampine/rpc

Close RPC connections and don't block
add concept of cylinder
distinguish cylinder from batch
switch batches to cylinders
add support for allocating cylinders within quorum
move insert/delete to operating on a quorum
add formatting and files to quorum.Status()