Deletes commas inside arrays when next value is negative

[timepieces141]

If I have an array, and one of the values is a negative number, JSONComma will delete the comma that precedes it when I save the file.

A few example JSON that will cause this.

{
    "foobar": [0, -1]
}

{
    "foobar": [0, 1, -1]
}

{
    "foobar": [0, -1, 4]
}

{
    "foobar": [0, -1, 4, -2]
}

All of these examples will delete the comma directly preceding the minus sign (-), but will leave all of the others.

Sublime Text Build: 4107
Installed via Package Control

If I remove JSONComma via Package Control, the commas no longer disappear on delete.