lib/std/Io.zig          | 114 +++++++++++++++++++++++++++++---
 lib/std/Io/Threaded.zig |  75 ++++++++++++++++++++-
 lib/std/Io/test.zig     |  75 +++++++++++++++++++++
 3 files changed, 251 insertions(+), 13 deletions(-)