389 API Changes (#393)

* Update PHPUnit to 8

* Fix API endpoints closes #389

* Update pagination method in Repository contract to look at the page number closes #390

* Remove unused imports

* Fix tests in FlightTests

* Typecast page

* Don't register factories

* Remove Factory loading

* Remove unused imports

tests/FlightTest.php

@@ -165,12 +165,12 @@ class FlightTest extends TestCase
             'airline_id' => $this->user->airline_id,
         ]);
 
-        $res = $this->get('/api/flights');
+        $res = $this->get('/api/flights?limit=10');
 
         $body = $res->json();
         $this->assertEquals(2, $body['meta']['last_page']);
 
-        $res = $this->get('/api/flights?page=2');
+        $res = $this->get('/api/flights?page=2&limit=5');
         $res->assertJsonCount(5, 'data');
     }