• [Enhancement] Provide fast-track for events without subscriptions to save on allocations.
• [Enhancement] Save memory allocation on each contract rule validation execution.
• [Enhancement] Save one allocation per float_now + 2-3x performance by using the Posix clock instead of Time.now.utc.to_f.
• [Enhancement] Use direct float_millisecond precision in monotonic_now not to multiply by 1000 (allocations and CPU savings).
• [Enhancement] Save one array allocation on one instrumentation.
• [Enhancement] Allow clearing one event type (dorner).