Formats with multiple leading 000s need to preserve these in the output

[snoopyjc]

Formats with multiple leading 000s need to preserve these in the output:

console.log(SSF.format('000.0', 1))
1.0  (Excel gives 001.0)
console.log(SSF.format('000.#', 1))
1.  (Excel gives 001.)
console.log(SSF.format('000.0', 1.2))
1.2  (Excel gives 001.2)
console.log(SSF.format('000.#', 1.2))
1.2  (Excel gives 001.2)

[snoopyjc]

This is matching 'dec1'.

[clement911]

We're also running into this bug. It's a pretty basic format though, it's the first one we tried.