simulation now supports multiple landmarks
added handling for no measurement data
available at a given time (sim not over)

-working on incorporating multiple landmarks
-working on incorporating multiple robots
-working on handling of end of simulation vs. no meas. data available

Added custom noises to simulated_dataset_manager.py
Thorough review of simulated_dataset_manager reveals that it works correctly!
fixed delta_t with regards to alternation between measurement and odometry updates -> scheduling of this will change in next commit
will add multiple robots

Refactored some more elements of the code to be interchangable. Currently debugging communications of request/response messages.

1st iteration, next step is to add dynamic generation.