Add calendar aligned months

src/schema.gql

@@ -99,6 +99,7 @@ input DatetimeRangeAggregationInput {
   startDatetime: DateTime!
   endDatetime: DateTime!
   interval: TimeInterval!
+  feature: String! = "created_at"
 }
 
 """
@@ -115,16 +116,19 @@ input TimeInterval {
   hours: Int = 0
   days: Int = 0
   weeks: Int = 0
-
-  """
-  Assumes a month is 30 days long
-  """
   months: Int = 0
 
   """
   Assumes a year is 365 days long
   """
   years: Int = 0
+
+  """
+  Example usage:
+  True eg 1/15-3/15 => [(1/15,1/31), (2/1,2/28), (3/1,3/15)]
+  False eg 1/15-2/15 => [(1/15,2/15), (2/16,3/15)]
+  """
+  calendarAlignedMonths: Boolean! = true
 }
 
 input FilterInput @oneOf {