gcpy/benchmark/modules/benchmark_gcclassic_stats.py
- Script to scrape statistics (Wall time, memory, OH metrics, timers)
  from the GEOS-Chem Classic cloud benchmarks on AWS

CHANGELOG.md
- Updated accordingly

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>

gcpy/benchmark/modules/benchmark_gcclassic_stats.py
- Now print MCF (aka CH3CCl3) lifetime before CH4 lifetime, which is the
  proper order in the "GEOS-Chem 1-month benchmark stats" spreadsheet.

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>

gcpy/benchmark/modules/benchmark_gcclassic_stats.py
- Now write output in comma-separated format

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>

gcpy/benchmark/modules/benchmark_gcclassic_stats.py
- Add 2 blank columns after "Wall Time"
- Add 2 blank columns after "CH4"
- Remove "blank" after "Mean OH"

This now allows you to cut-n-paste the output into the Google sheet
and then pick Data -> Split cell into columns.

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>