I hit this when trying to do the following:

{% if items.count > 1 %}

Which doesn't work, because the rhs Variable evaluates to nil. This simply adds a number literal parser to allow this expression to work.

Small note: I'm purposefully not using a NumberFormatter to parse the number, because I want to ignore the user's locale for things like the decimal separator. Luckily enough, this simple way of parsing a number evaluates stuff like 2two and three3 to nil, so it really only parses actual numbers.