Comparing elm-lang/core 2.1.0 to local changes...
This is a MAJOR change.

------ Changes to module Array - MINOR ------

    Added:
        type Array a


------ Changes to module Color - MINOR ------

    Added:
        type Color
        type Gradient


------ Changes to module Date - MINOR ------

    Added:
        type Date


------ Changes to module Dict - MINOR ------

    Added:
        type Dict k v
        size : Dict.Dict comparable v -> Int


------ Changes to module Graphics.Collage - MAJOR ------

    Added:
        type Path
        type Shape

    Removed:
        type alias Path = List (Float, Float)
        type alias Shape = List (Float, Float)


------ Changes to module Graphics.Element - MAJOR ------

    Added:
        type Direction
        type Pos
        type Position

    Removed:
        type alias Position =
            { horizontal : Three,
              vertical : Three,
              x : Pos,
              y : Pos
            }


------ Changes to module Json.Decode - MAJOR ------

    Changed:
      - type Decoder a = Decoder
      + type Decoder a



------ Changes to module Json.Encode - MAJOR ------

    Changed:
      - type Value = Value
      + type Value



------ Changes to module Random - MAJOR ------

    Added:
        type Generator a
        type Seed
        andThen : Random.Generator a -> (a -> Random.Generator b) -> Random.Generator b
        map : (a -> b) -> Random.Generator a -> Random.Generator b

    Removed:
        type alias Seed =
            { state : State,
              next : State -> (Int, State),
              split : State -> (State, State),
              range : State -> (Int, Int)
            }


------ Changes to module Regex - MINOR ------

    Added:
        type Regex


------ Changes to module Set - MAJOR ------

    Added:
        type Set t
        size : Set.Set comparable -> Int

    Removed:
        type alias Set t = Dict.Dict t ()


------ Changes to module Signal - MINOR ------

    Added:
        type Address a
        type Message
        type Signal a


------ Changes to module Task - MINOR ------

    Added:
        type Task x a
        type ThreadID


------ Changes to module Text - MINOR ------

    Added:
        type Text


------ Changes to module Transform2D - MINOR ------

    Added:
        type Transform2D