• Added version to executable properties.
• Added --log-dir. (Contributed by oscarbailey-tc)
• Added --env.
• Added --path.
• When a custom --cwd is set, it is now automatically added to the command's PATH to make it easier to write some commands. Specifically, assuming there is a C:\foo\bar\baz.exe, then --cwd C:\foo\bar -- baz.exe will work now, but --cwd C:\foo -- bar\baz.exe still will not work, because the PATH only helps to resolve executable names, not subfolder names.