Fix bug for instruction analysis being incorrect when in quiet mode

    * analysis/instruction_stats.py: Fix for code not executing when 'quiet'
Added simulation script for cortex-m0, and analysing compressed traces

    * analysis/simulate.cortex-m0: Created, simulate on cortex-m0
    * analysis/instruction_stats.py: xz compressed traces can be analysed
Added the instruction groupings for cortex-m0

    * analysis/instruction_stats.py: Added instructions for cortex-m0