using better pseudo-random alogrithm (SHA1PRNG)

src/main/java/agents/RandomWalkingAgent.java

src/main/java/environment/ChunkedSEIRSEnvironment.java

src/main/java/environment/Environment2D.java

src/main/java/scheduler/FairSynchronousScheduler.java

src/main/java/sma/SEIRS_SMA.java

src/main/resources/output.png

src/main/resources/parameters.yaml