OpenDC v2.3c

Added several improvements to performance.

What's Changed

• Small update to trace-based failure models by @DanteNiewenhuis in #271
• Streamlined the FlowNetwork for better performance by @DanteNiewenhuis in #273
• Connected the cpu power model given by the topology.json to SimCpu.java by @DanteNiewenhuis in #274
• Removed IndexOf function from Multiplexer by @DanteNiewenhuis in #275

Full Changelog: v2.3b...v2.3c