addSubItem has no tax in tax calculation

[dennisoderwald]

As it seems I can't set a tax to an addSubItem but also the tax from the original item is not taken into account, so all sub items are calculated without tax.

    $item = LaraCart::add(2, 'Product Name', 1, 1.00, [
        'tax' => '0.19'
    ]);

    $item->addSubItem([
        'price' => '1.00',
        'qty' => 1
    ]);

Expected result:

Sub Total: 2.00
Tax Total: 0.38
Total: 2.38

Output result:

Sub Total: 2.00
Tax Total: 0.19
Total: 2.19

The variables 'taxable' and 'tax' cannot be set in the sub-item either.

[dennisoderwald]

The problem probably occurs in connection with tax_by_item => true.

[lukepolo]

this has been fixed in the newer branch.