Deferred BelongsToMany & HasManyThrough Fields

Fixed issue w/ belongsToMany and hasManyThrough relationships and the QueryBuilder. Also fixes hasMany directive with these relation types.

Breaking Change: Change scope name

Laravel has a scopeGetConnection on Eloquent models that was colliding w/ the scope provided by Lighthouse. The Lighthouse scope has been renamed to scopeGetGqlConnection.

Fix: Connection startCuror and endCursor

Merge pull request #65 from nuwave/fix/connection-cursor

fix start and end cursors for connection edges

v1.0.2

add connection directive

v1.0.1: Merge pull request #42 from lucasmichot/feature/master/typo

Fix typo

v1.0.0

sanity check on variable

v0.7.8

rename use statement

v0.7.7

use class name as default

v0.7.6

created edge make command

v0.7.5

remove slashes from name