Avoid duplicating assets when they have params

[erikn69]

BUG 1: If you do

Bonsai::add('example.js');
Bonsai::add('example.js?param=1');
Bonsai::add('example.js#param');

You get

<script type="text/javascript" src="/example.js"></script>
<script type="text/javascript" src="/example.js?param=1"></script>
<script type="text/javascript" src="/example.js#param"></script>

@kaidesu @thekanbo this PR avoid duplicating the same file on assets

---

BUG 2: ! in_array($assets, $collection) is always false because in_array('test', ['test'=>[]])) is false, array_keys is needed, Demo Link

bonsai/src/Assets.php

Lines 173 to 175 in 466603f

	$collection = $this->collection->get($type);
	if (! in_array($assets, $collection)) {

BUG 3: There is a bug because if you do something like this

Bonsai::add('example.js');
Bonsai::add('test.js','namespace');
Bonsai::add('example.js')->dependsOn('namespace');

as 'example.js' already exists, $this->lastAddedAsset is 'test.js', so dependsOn put namespace as dependency on 'test.js' instead of 'example.js', that is why $this->lastAddedAsset must be out of ! in_array($assets, $collection)
(it's currently working because always false makes replace the key all the time, when you fix the condition ! in_array($assets, $collection) with array_keys the bug pop up)

bonsai/src/Assets.php

Lines 65 to 72 in 466603f

	if ($path === $this->lastAddedAsset) {
	$collection[$path] = array(
	'namespace' => $item['namespace'],
	'dependency' => $dependency
	);
	$this->collection->put($this->lastAddedType, $collection);
	}