include and exclude list not accepted

Thanks for this great and useful extension!

I encountered a small bug. When I use the include of exclude list files will not be copied. I tried:
`
            "excludes": [
                "**/*.scss",
            ],
`
and
`
"includes": [
            "**/*.css",
            "**/*.css.map"
        ],
`
In both cases no css files are copied.

I hope you have a solution!

Regards