Move config into separate file
Fix possible error in Grid#findClosestBigCity
Move generation of exporting filenames to config, as it's based on its data
Add new class for storing the history of simulation
Add CLI interface written in node.js
Add output/ directory to .gitignore

This directory contains files generated from the simulation.js script
Change adding randomly ill to mark them as infective
Change random cell generation to choose only from cells with population greater than 50K
Fix error in Grid#unserialize
Add new options to node.js based simulation:
- add simulation of R_0 parameters
- add CLI for choosing whether to run main simulation or R0 simulation
- change simulation to start from the same grid configuration
Add cells' state capturing in CLI based simulation
Set real world value of virus morbidity
Fix possible error with incubatedDays length in CLI-based simulation
Refactor simulation.js
Fix simulation of R0 in CLI
Add real-world based values of parameters to config
Lower the value of \phi_s parameter
Update commutes to new simpler algorithm
Don't repeat simulations for v=0
Add more values of beta to simulation.js (needed for simulation of R0)