lib/std/Io.zig             | 11 ++---
 lib/std/Io/File.zig        |  5 +-
 lib/std/Io/File/Reader.zig | 33 +++++++------
 lib/std/Io/Threaded.zig    | 84 ++++++++++++++------------------
 lib/std/Progress.zig       |  3 +-
 lib/std/zig/system.zig     |  1 -
 6 files changed, 62 insertions(+), 75 deletions(-)