Allow any 'callable' action, not just anonymous functions

If creating routes dynamically, like the following:

```php
$router->getRoutes()->add(new Route(array('GET'), '/foo', array($this, 'xxx')));
```

... then the previous code will fail because `php array($this, 'xxx')` is not an instance of Closure, however `is_callable` will work just fine.
Find any 'callable' action, not just anonymous functions
Make Paginator::getUrl have priority over appends
Tweak test
Make the Console\Command and Console\Migrations\BaseCommand abstract
increased length of redis queue random id to 32 chars
Fixed view finder interface
Minor cs fixes
Travis testing
adds php timezone validations
Eliminate array_merge() on insert call for performance
make OptimizeCommand compile views
Added reject method to collection.
Respect DELETED_AT constant if set for soft deletes
adds test for timestamp validation
correcting character-set changes
Merge pull request #4539 from GrahamCampbell/4.2-views

[4.2] Fixed View Finder interface
Merge pull request #4541 from GrahamCampbell/4.2-cs

[4.2] Minor CS Fixes
Merge pull request #4542 from GrahamCampbell/4.2-travis

[4.2] Travis Testing
documentation changes