Using common style and whitespacing throughput the module, adding declarations for additional functions neighbors() and expand()
Adding stubs for neighbors() and expand() functions, whitespace and formatting
Implementing neighbors() function and neighbors_fn V8 wrapper function, implementing expand_fn() V8 wrapper function
Implementing expand() function
Simplifying insertion of last hash string in expand()
Merge pull request #1 from RocketAlien/dmitri/convenience_functions

Dmitri/convenience functions