Cloud TPU Diagnostics

The `cloud-tpu-diagnostics` library provides tools to monitor, debug, and profile jobs running on Cloud TPUs. It captures Python stack traces upon faults (e.g., segmentation faults, floating-point exceptions) and periodically collects traces to diagnose unresponsive or hung programs. Currently at version 0.1.5, it maintains an active release cadence with frequent updates focused on stability and minor feature enhancements.