[4.2] Gey keyName before instance can be translated into builder
[4.2] Always operate with query builder to prevent possible bugs
Fix broken MorphTo related test (testModelsAreProperlyPulledAndMatched)
Adding `$table->rememberToken()` method to schema builder

Includes tests

Signed-off-by: Adam Engebretson <adam@enge.me>
Adding `$table->rememberToken()` DocBlocks

Signed-off-by: Adam Engebretson <adam@enge.me>
Load environment variables array in dot-flatten form
improve formatting of mail logging
Garbage collector not delete old sessions
Stop using Whoops.
Work on error responses.
Quit overriding.
Increment version.
Work on Whoops.
Remove some unnecessary Whoops files.
Fix spacing.
Remove pretty page handler from compiled classes.
Increment verison.
Call Artisan dump-autoload after session:table
[4.2] Add flip to Collection
Intend $app->booted closure code