sed with globbing introduces newlines between file contents

[joshi-sh]

Node version (or tell us if you're using electron or some other framework):

NodeJS 9.11.2

ShellJS version (the most recent version/Github branch you see the bug on):

0.8.3/master

Operating system:

WSL (Ubuntu) on Windows

Description of the bug:

When running sed on multiple files a newline is introduced between the file contents

Example ShellJS command to reproduce the error:

(Assuming file1.txt is test1\n and file2.txt is test2\n)

shell.sed('test', 'hello', 'file*.txt');

Expected: hello1\nhello2\n
Got: hello1\n\nhello2\n

[nfischer]

This doesn't seem to be globbing specific. I think sed() is just adding a newline to the end each file (except the final one). Is this the same root cause as #900?