League API offset missing

The documentation states that

"

http://api.pathofexile.com/leagues?type=all

will only s how 50 leagues by default. Is there a way to get all the other leagues as well?

I tried supplying a parameter offset like this

"

http://api.pathofexile.com/leagues?type=all&offset=50

, but that will still only show me the first 50 leagues and et seems not possible to get any recent leagues with this.

Using

"

http://api.pathofexile.com/leagues?type=event

will show the current flashback leagues, but it seems impossible to get the last Warbands or Tempest league like this.

Any help is appreciated.