HEPCompSim/DCSim: DCSim simulator release v0.3

Production ready version of a distributed computing simulator (DCSim) based on WRENCHv2.2 and SimGridv3.34. Allows to simulate freely selectable workflows of batch and streaming jobs on arbitrary computing platforms processing freely selectable (amounts of) data. Thanks to performance updates in WRENCH and SimGrid the memory and computational requirements on executing resources for the simulator could be improved. This version is used in the studies presented in https://indico.jlab.org/event/459/contributions/11490/.

• Extension the support for platforms consisting of arbitrary numbers of GRID storages and workers by @HerrHorizontal in https://github.com/HEPCompSim/DCSim/pull/24
• Enable fluid model in file read by @HerrHorizontal in https://github.com/HEPCompSim/DCSim/pull/47
• Additional features for the workload generation by @ArturAkh in https://github.com/HEPCompSim/DCSim/pull/49 by @HerrHorizontal in https://github.com/HEPCompSim/DCSim/pull/51
• Extend the sampling of job characteristics by @HerrHorizontal in https://github.com/HEPCompSim/DCSim/pull/54
• Config and plot changes for exemplary scenarios by @HerrHorizontal in https://github.com/HEPCompSim/DCSim/pull/56
• Enable simulation of scheduling and executing multi-core jobs by @HerrHorizontal in https://github.com/HEPCompSim/DCSim/pull/57
• Enable dataset configuration by @rsreds in https://github.com/HEPCompSim/DCSim/pull/53
• Rework simulator configuration to be completely steering-file based
• Update plotting and helper scripts
• Extended examples
• Minor bug fixes

• @rsreds made their first contribution in https://github.com/HEPCompSim/DCSim/pull/52

Full Changelog: https://github.com/HEPCompSim/DCSim/compare/v0.2...v0.3