Bump concat-with-sourcemaps to ^0.1.3

- Prevents unintentionally installing 0.1.1.
- 0.1.1 can throw `source file not found` errors in `gulp-sourcemaps`.
Merge pull request #63 from c0/patch-1

Bump concat-with-sourcemaps to ^0.1.3
2.3.5
Merge pull request #62 from floatdrop/master

Passing vinyl options as first argument
2.4.0