Fix misnamed function

nilmdb/server/interval.pyx

@@ -67,7 +67,7 @@ cdef class Interval:
         return (self.start, self.end) > (other.start, other.end)
     def __le__(self, Interval other):
         return (self.start, self.end) <= (other.start, other.end)
-    def __le__(self, Interval other):
+    def __ge__(self, Interval other):
         return (self.start, self.end) >= (other.start, other.end)
     def __eq__(self, Interval other):
         return (self.start, self.end) == (other.start, other.end)