Unable to add multiple field sorts

[jrodger]

Adding multiple field sorts overwrites previous additions.

$search = new Search();

// Add some queries...

$sort1 = new FieldSort('acme1', null, ['order' => FieldSort::ASC]);
$sort2 = new FieldSort('acme2', null, ['order' => FieldSort::DESC]);
$search->addSort($sort1);
$search->addSort($sort2);

$body = $search->toArray() // Only $sort2 is present in the output

It's possible this is only occurring on Windows and seems to be related to the usage of uniqid as seen in some other issues.

[jrodger]

Pull request #236