Removed unnecessary Array.prototype.slice() call (#465)
Removed unnecessary Array.prototype.slice() call (#465)

ES6 rest parameter (`...args` in this case) returns a true array, not an "arguments" object, so no need for this indirection
Silverwolf90/vexflow,Tails/vexflow,Huji/vexflow,aaronmars/vexflow,Huji/vexflow,aaronmars/vexflow,Tails/vexflow,Silverwolf90/vexflow,Huji/vexflow,Tails/vexflow,aaronmars/vexflow,Silverwolf90/vexflow