Release of v5.1.1-alpha1

Move all banners to GitHub. Adds library phpspreadsheet to JCB. Adds import item example to demo component. Updates the Superpower class with the GetRemote class in the plugin. Ensures the super power autoloader triggers the correct repositories.

libraries/phpspreadsheet/vendor/markbaker/complex/examples/testOperations.php

@@ -0,0 +1,35 @@
+<?php
+
+use Complex\Complex as Complex;
+use Complex\Operations;
+
+include(__DIR__ . '/../vendor/autoload.php');
+
+$values = [
+    new Complex(123),
+    new Complex(456, 123),
+    new Complex(0.0, 456),
+];
+
+foreach ($values as $value) {
+    echo $value, PHP_EOL;
+}
+
+echo 'Addition', PHP_EOL;
+
+$result = Operations::add(...$values);
+echo '=> ', $result, PHP_EOL;
+
+echo PHP_EOL;
+
+echo 'Subtraction', PHP_EOL;
+
+$result = Operations::subtract(...$values);
+echo '=> ', $result, PHP_EOL;
+
+echo PHP_EOL;
+
+echo 'Multiplication', PHP_EOL;
+
+$result = Operations::multiply(...$values);
+echo '=> ', $result, PHP_EOL;