'get' returns wrong value when the value has a trailing negative sign

[BobKnothe]

With the following:
{ digitGroupSeparator: '.', decimalCharacter: ',', decimalCharacterAlternative: '.', currencySymbol: '\u00a0€', currencySymbolPlacement: 's', roundingMethod: 'U', negativePositiveSignPlacement: 'l' }

and the value '10,09- €'
the 'get' method return '10.09'

[BobKnothe]

When the value is an empty string '' the get method return '0.00'.

It should return and empty string '' unless settings.emptyInputBehavior='zero'

[BobKnothe]

Fixed the 'get' method returns a negative value when there is a trailing minus sign in version "2.0.0-beta.17"