uv

da8a4a6f - pep508: write x.y.* when serializing MarkerExpression

pep508: write x.y.* when serializing MarkerExpression It's unclear to me whether this was intentional or not, but I realized that converting a MarkerExpression to a string treated EqualStar and NotEqualStar as Equal and NotEqual, respectively. I tweaked this to match the Display impl for VersionSpecifier. (Negation tests in the next commit cover this change.)