Added saving and saved model events
Update Filesystem.php

file_exists() return true for folder.
Filesystem::get() will return false instead of FileNotFoundException() if $path is a folder
Update Filesystem.php

Adding isFile
Merge pull request #723 from Shhu/patch-1

Update Filesystem.php
Refactoring some code in the workbench.
Refactoring workbench. Prefer framework agnostic packages by default.
Don't override names if they have been explicitly set.
Tweaks to how migration autoloads are handled. Autoload command.

- Added new `dump-autoload` Artisan command that runs optimized for app
and all workbenches.
- Refactored post `migrate:make` hooks to dump autoloads for
workbenches.
Fixing typo in readme.
Fix tests.
All Eloquent relation types should use fully qualified column names.
Merge pull request #724 from AndreasHeiberg/bug-sync-uniquenesss-constraint-conflicts

Detach before attach to prevent uniqueness constraint conflicts
Added `DB::listen(Closure)` method which may be used to listen for database queries.
Merge pull request #699 from JonoB/master

Added saving and saved model events
Fix Eloquent save events.
Added `Model::findOrFail(id)` and `firstOrFail` methods to Eloquent. Throws `ModelNotFoundException`. Can listen in your apps and return 404 repsonses if you want.
Fix double table prepend.
Fix typo.
Fix some issues in Eloquent.
Merge branch 'eloquent-touch'