Feature request: being able to make several answers and accept it as correct if any of them is entered.

[EugeneTarasenko]

Sometimes, when using cloze deletions there are several answers, and any of them can be correct.
For example, the sentence:

"We could have lunch outside if it weren't/wasn't raining."

Here both "weren't" and "wasn't" are correct. So after entering either answer it should be accepted as correct.

Currently after entering either "weren't" or "wasn't" the answer is considered as wrong and marked like this:

But it would be nice to accept it as correct and display it like this:

The syntax could be like this:

We could have lunch outside if it {{c1::weren't | wasn't::not to be}} raining