General build cleanup
Moved Cursor stuff underneath Pagination.
This is because Pagination is a general term, which has two approaches implemented in this package: Cursors or Paginators.
Other pagination systems could be implemented, and all of them would live inside pagination.
Merge branch 'master' of github.com:thephpleague/fractal
Fixed dodgy type hint docblock.
Implementation of configurable serializers.

Signed-off-by: Jason Lewis <jason.lewis1991@gmail.com>
Remove meta data for now.

Signed-off-by: Jason Lewis <jason.lewis1991@gmail.com>