Cannot have @ in authors field

[malept]

Problem

If the author field in your package.json file contains an @ (usually in an email address), or you set the authors config option to a value that contains an @ character, running the Windows installer will fail with:

Error:

The '@' character, hexadecimal value 0x40, cannot be included in a name. Line 1, position 40.

Error: Failed with exit code: 1

Having @ in the owners and copyright options (by default, those options use authors) appears to be fine.

Solution

• Strip out the @ from metadata.authors before writing the nuspec file.
• Make sure it doesn't affect the owners or copyright default options (as the bug doesn't affect those fields for some reason).
• Write tests to make sure the above points are followed (only need to check the nuspec file contents, don't need to run through the entire installer process)