Variorum 0.6.0

Version 0.6.0 is a major release.

New features

• Support for new architectures: Intel discrete GPUs, AMD GPUs through ROCm-SMI
• Add python wrappers and python module pyVariorum

API changes

• Update JSON APIs to use char* instead of json_t*
• Creates new variorum_topology.h header to expose get topology APIs

Other notable changes

• VARIORUM_LOG moved from a build variable to an environment variable
• Update architecture-related names to be more granular, for example,
  VARIORUM_WITH_AMD became VARIORUM_WITH_AMD_CPU and VARIORUM_WITH_AMD_GPU, and
  SandyBridge_2A.h became Intel_06_2A.h
• Standardized examples with -h and -v flags, for printing the help menu and
  Variorum version, respectively