v0.4.9

Added

• Undefined.coalesce takes a variable number of arguments and returns the first non-Undefined value (flash-gordon)

  Undefined.coalesce(Undefined, Undefined, :foo) # => :foo

Fixed

• Undefined.{dup,clone} returns Undefined back, Undefined is a singleton (flash-gordon)

Compare v0.4.8...v0.4.9