Don't throw Exception if no last name
Merge pull request #3 from frewsxcv/patch-1

Don't throw Exception if no last name
Fixing issue #5: values can now have indentation.
Merge pull request #4 from gburca/master

1. Handling GEDCOM files with BOM. 2. Handling Persons without sex entry. 3. Additional event types.
An Individual can now have multiple parent families (fix for failing unit test caused by last merge request).
Fixing tests, more tests.