v0.94.4

Bump to v0.94.4: line-buffer stdout on Windows for Scoop+PowerShell

mino --version and the REPL banner produced no output when launched
through Scoop's shim under PowerShell, while Git Bash worked fine on
the same exe. Root cause: MSVCRT's stdout is block-buffered when
stdout isn't a tty, and the Scoop shim doesn't propagate the
buffered tail at child exit. main() now forces line-buffered stdout
and unbuffered stderr on _WIN32 so output is visible regardless of
how the binary is invoked. macOS / Linux unchanged.