DEC64 - Douglas Crockford's Decimal Notation

Today, watching an old Douglas Crockford's video I was interested in his proposal of a new way of defining a new number type called DEC64.

Even though I have not enough understand of low level of storing numbers (I guess I studied this stuff at school) I tend to agree to Douglas's idea that application languages should have one numeric type and the type should not behave like:

0.1 + 0.2 === 0.3 // return false

Someone believe that Douglas proposal is not good enough. I believe that one on the goal of the proposal was also to start a discussion about this topic.

I wonder if after two years anybody has implemented this system somewhere.