Hello!

The main feature introduced in this update is: Background/Continuous Profiling!

• spark will now automagically start a lightweight profiler in the background when it enables.
• In simple terms, this means that at any time, you can run /spark profiler upload and get the last 1 hour of profiling data to look at!
• By default, the background sampling interval is 10ms which should be low enough to be unnoticeable on most hardware!
• It's configurable - you can turn the feature off or configure the interval in spark's config file.

More detailed info can be found on GitHub: https://github.com/lucko/spark/pull/265

The feature has been in beta for a little while, and I think most of the issues have now been ironed out, but please let me know if you run into any problems!


Plus some bonus fixes/changes:

• Tidy up command feedback messages
• Remove recusion in protobuf data to avoid StackOverflowException
• Limit profile length to 1 hour
• Suppress profiler logs when running in background
• Remove recursive calls in class source visitor
• Fix some NullPointerExceptions
• Include player/entity/chunk counts in window statistics
• Upgrade to async-profiler 2.9
• Add a temporary workaround for async-profiler JVM crash issues