Insert directional single quote before year abbreviations
This issue relates to the UCP cleanup macro (#21 (closed)).
A straight apostrophe (u0027) or a left-side single quote (u2018) followed by a numeral (0-9) should be replaced with a right single quote (u2019)
This will ensure that abbreviated years get the right quotation mark.
'97 -> ’97 ‘97 -> ’97