Why Geo.PostGIS.Geometry?

[leifmetcalf]

I'm curious why you chose to have only the generic Geometry Ecto.Type implementation and not separate implementations for Point, Polygon, etc. For example:

schema "restaurants" do
  field :name, :string
  field :address, :string
  field :location, Geo.Point

  timestamps(type: :utc_datetime)
end

Wouldn't it be useful to know that the coordinate is a point?