Bugfix: fix main source of invalid profiling stream from ServerProfiler
- Drop dead threads on every succesful frame
- Reset all writing indices on new frame and on resuming continuous profiling post-export
- release binary built using 019295b4
There's still another issue hiding somewhere, but it's much more stable now.
Tests: on craggy exporting every 3rd frame for 5 minutes straight. Previously would trip after 20seconds.