Connection definitions should be optional by default

[lxwbr]

@TOTBWF as a reminder.

Right now defining a connection produces something like this:

communities(first: Int, after: String): CommunityConnection!

but it supposed to be like this according to Relay (if you run Relay's compiler and execute pagination you would run into problems overwise):

communities(first: Int, after: String): CommunityConnection

Edit the creation of a connection definition accordingly. (change in the function connectionOf or something like this if I remember correctly)

[Horusiath]

@zunder in this F# implementation nullability works in reverse - so everything is non-nullable by default, as nullability is well expressed via F# Option type, while contrary would be almost impossible using F# primitives.

If you need nullable connections you may mark them with Nullable(ConnectionOf Type).

[njlr]

@xperiandri I think we can we close this one?

[xperiandri]

@njlr thanks