Can get 1 HRU managed by the file access actor. An HRU will wait until it is told it can write again.

file_access_actor is now responsible for reading in inital conditions data for hrus

Got the clients communicating together.

The tuple holds the actor address and the hostname so actors can connect when a server goes down

removed dependency in batch class where the batch was provided a client. Now a client only contains the batch and not vice versa