`posts/all` returns a limited number of posts on delicious

Currently only the first 1000 bookmarks are received when using delicious due to the default limit of the posts/all function. Suggested solution:

1. increase the default limit using &results=100000 (this is the maximum limit)
2. if exactly 100000 bookmarks are returned in that first fetch (and if delicious is used), start another request using &start=100000&&results=100000
3. repeat 2 until less than 100000 results are returned