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github

perf: make sure to never open handles as async on Windows - turns out overlapped IO performance is even worse than I expected, just scheduling a blocking work item to .NET's threadpool is significantly faster and scales better with hill-climbing in place
perf: minor codegen improvement to U8Slices enumerator

1605 of 4181 branches covered (38.39%)

Branch coverage included in aggregate %.

6168 of 11481 relevant lines covered (53.72%)

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