If the date components is nil, don't try to create a date from that. Fixes test failure. Refs #20.
If the date components is nil, don't try to create a date from that. Fixes test failure. Refs #20.

mirion/iso-8601-date-formatter,realestate-com-au/iso8601parser,boredzo/iso-8601-date-formatter,boredzo/iso-8601-date-formatter,orta/iso-8601-date-formatter,boredzo/iso-8601-date-formatter,mirion/iso-8601-date-formatter,hyperoslo/HYP8601,realestate-com-au/iso8601parser,target/iso-8601-date-formatter,hyperoslo/HYP8601,hyperoslo/HYP8601,orta/iso-8601-date-formatter,caffco/iso-8601-date-formatter,caffco/iso-8601-date-formatter,orta/iso-8601-date-formatter,hyperoslo/HYP8601,caffco/iso-8601-date-formatter,mirion/iso-8601-date-formatter,target/iso-8601-date-formatter,realestate-com-au/iso8601parser,target/iso-8601-date-formatter,orta/iso-8601-date-formatter