Just under the wire for 2018, the final London play opening of the year has turned out to be one of the very best. It might have even won my vote for the play of the year but for the fact that Matthew Lopez's The Inheritance long got there first.That does not, however, diminish its significant achievement: while The Inheritance has a scene that shows the utter shock and despair of a group of educated, artsy New York gay men at the election of Donald Trump, Lynn Nottage takes a far longer view...