0.0.4

• Adds goal metrics wakatime_goal_info, wakatime_goal_progress_seconds_total, and wakatime_goal_seconds.
• Adds leader metrics wakatime_rank, user rank on the leaderboard.
• Adds total metrics cumulative_total, total time captured since beginning of time.
• Adds support for environment variables (see readme.md)
• Breaks each endpoint into a separate collector for better speed and more granular logs/metrics.