Error on discrete with zero in first position

[SHoltzen]

The following valid program gives a divide by zero error:

let x = discrete(0, 0.5, 0.5) in
x

[SHoltzen]

It is a syntax error:

~/Downloads ❯❯❯ ./Dice.native test2.dice
test2.dice:1:19: syntax error
Uncaught exception:
  (Failure “”)