Add --base <run_id> to compare local run with another run#273

GuillaumeLagrange merged 3 commits intomainCodSpeedHQ/codspeed:mainfrom

cod-1796-make-comparison-between-two-local-runs-easierCodSpeedHQ/codspeed:cod-1796-make-comparison-between-two-local-runs-easierCopy head branch name to clipboard