Add vendor and .env to make usable

vendor/symfony/polyfill-php70/Resources/stubs/ArithmeticError.php

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+<?php
+
+class ArithmeticError extends Error
+{
+}

vendor/symfony/polyfill-php70/Resources/stubs/AssertionError.php

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+<?php
+
+class AssertionError extends Error
+{
+}

vendor/symfony/polyfill-php70/Resources/stubs/DivisionByZeroError.php

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+<?php
+
+class DivisionByZeroError extends Error
+{
+}

vendor/symfony/polyfill-php70/Resources/stubs/Error.php

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+<?php
+
+class Error extends Exception
+{
+}

vendor/symfony/polyfill-php70/Resources/stubs/ParseError.php

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+<?php
+
+class ParseError extends Error
+{
+}

vendor/symfony/polyfill-php70/Resources/stubs/SessionUpdateTimestampHandlerInterface.php

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+<?php
+
+interface SessionUpdateTimestampHandlerInterface
+{
+    /**
+     * Checks if a session identifier already exists or not.
+     *
+     * @param string $key
+     *
+     * @return bool
+     */
+    public function validateId($key);
+
+    /**
+     * Updates the timestamp of a session when its data didn't change.
+     *
+     * @param string $key
+     * @param string $val
+     *
+     * @return bool
+     */
+    public function updateTimestamp($key, $val);
+}

vendor/symfony/polyfill-php70/Resources/stubs/TypeError.php

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+<?php
+
+class TypeError extends Error
+{
+}