Tests for characters that take up double-width
`safe_strpad()` should pad the string according to display needs

Because `safe_strlen()` gives us the string length for output, we need the true length to determine how much we should pad the string
Value is no longer used
Strip Hebrew vowel characters from real length calculation

Hebrew writing has two separate accents / vowels under letters. In testing, all fonts properly handle this
Merge pull request #66 from wp-cli/fix-66

More table formatting wonkiness