Split bodyClass string to allow multiple body classes

[seanblonien]

From issue #295, simply allow for a bodyClass string with multiple class names and spread them as arguments for classList.add method.

Passing this prop would throw an error and the print would never render.

bodyClass="firstClass secondClass"

With this fix, you are allowed to pass more than 1 class names without error.

[MatthewHerbst]

Awesome, thank you!

[MatthewHerbst]

Published as v2.10.1, thanks again!