* removed old timing tracking code
* tools/triage_py/README.md: updated
* triage_version.py: fixed output when when stderr and stdout are not empty
* triage_version.py: added `--perf` to collect performance data in CSV format
* triage_version.py: added TODO about providing additional options
* triage_version.py: added `--start` to specify the first tag/commit to execute