Simplify syntax for POSTs, PATCHs, and PUTs

Improve passing options to the client by setting the "body" key and encoding the options in JSON so the user doesn't have to.

For example, prior to this release I have to do this to pass in data to the client for POST, PATCH and PUT:

        $patch_data = [
            'body' => json_encode(
                [
                    'op'    => 'replace',
                    'path'  => '/priority/id',
                    'value' => $priority['id'],
                ]
            ),
        ];

$connectwise_client->patch("url/to/patch/to/$id", $patch_data);

With this release I'll only have to do this:

        $patch_data = [
                    'op'    => 'replace',
                    'path'  => '/priority/id',
                    'value' => $priority['id'],
                ];

$connectwise_client->patch("url/to/patch/to/$id", $patch_data);

Fix bugs

• Fix #40
• Fix comments, Scrutinizer issues
• Increase code coverage

GitHub Actions

Merge pull request #44 from spinen/develop

GitHub Actions, Fix badge URLs

Laravel 5.6 support

3.4.0

Support Laravel 5.6