Signed currency is inconsistent

[seansfkelley]

Using a format specifier with '$' and '+' produces inconsistent behavior:

numeral(-1000).format('$+0,0') === '-$1,000'
numeral(1000).format('$+0,0') === '$+1,000'

[adamwdraper]

Another instance to solve numeral("-102300.00").format("$0,00.00+")