Finished implementing testcases from https://regex101.com/r/uY5tY2/5 which
were used to prototype the regex. Verified that theinput line is being
parsed and the components extracted correctly.
Added a vcard21 test group to mark backwards-compatibility test cases.
Noticed error which showed up in command-line test run but NOT IN NetBeans
having to do with comparison between an array with a single member and an
array with a single member array as its sole member.
Added vcard21 group to some testcases to mark backwards-compatibility tests.