Added support for passing an Eloquent Collection to sync() when inserting on a many-to-many relationship instead of just an array of IDs
Small change to follow Laravel coding style
Use modelKeys to retrieve relation IDs correctly instead of incorrect ->otherKey
Validator::validateMimes returns false if the uploaded file isn't valid

If the upload is partial, the UploadedFile instance might be invalid and the mimetype shouldn't be validated.
Make Model::hydrate's first argument mandatory
Input::exists function added.

New 'Input::exists' function for checking for the mere presence of
input items.
Merge pull request #4103 from JosephSilber/model-hydrate-tests

Make Model::hydrate's first argument mandatory
Allow Input::exists to be passed an array
Merge pull request #4107 from JosephSilber/input-exists-array

Allow Input::exists to be passed an array
Merge pull request #3804 from arthurdarcet/validate-mime

Validator::validateMimes returns false if the uploaded file isn't valid
Work on file mime validator.
Working on cleaning up some code.
Tweak composer (just testing something).
Reverting change.
Validation factory tweaks
Validator constructor fixes
Merge pull request #4115 from GrahamCampbell/4.1-validator

[4.1] Validation Tweaks/Fixes