Make all option struct fields pointers

[svanharmelen]

Fixes #427 #1292

[mitar]

If we are doing this breaking change, could we also make sure to get rid of all []*Struct and convert them into []Struct? For example:

type ReleaseAssets struct {
	Links []*ReleaseAssetLink `url:"links" json:"links"`
}

There is no point in having * there. Does API even survive sending a null inside the JSON array?

[svanharmelen]

There is no point in having * there that depends of how and where your use the items from the slice I guess. But regardless, I guess we can have a look to also update that as over time I also came to the same conclusion.

Does API even survive sending a null inside the JSON array? This struct is not mean to be send to the API, but I see it actually is, so that's another issue on itself 😏

[mitar]

When do you plan to merge this?

[svanharmelen]

Not sure yet... But certainly before the end of 2021, so in the coming few weeks.

[mitar]

Any reason why to delay? I am using this and it works well. I think it will be just hard to maintain this branch (it already has conflicts).