Removing restricted product from cart only displays error message

Hi. Great plugin!

However, I have found a bug. If I add two products to the cart, let’s say products A and B, where product A is required before adding product B, and then go to the cart page and remove product A, the default message appears that the B cannot be *added* without adding A, but product A is still removed from the cart. It should prevent the removal from cart in that order, and also should display a corresponding message (one that says removal instead of adding).

Also, it would be nice if I can make a product category or product type to be required, not only specific products, hopefully this will be available in future versions.

Thanks!

Vasko