#101 - lowercase keywords

[Baakoma]

This should close #101

Before

Class LowercaseKeywordsTest Extends ObjectOperatorTest
{
    PUBLIC function test(): int
    {
        Foreach (range(1, 5) as $item) {
            IF ($item > 3) {
                Return 0;
            }
        }

        RETURN 5;
    }

    public function testAnonymousClass(): void
    {
        new Class() EXTENDS LowercaseKeywordsTest {};
    }
}

After

class LowercaseKeywordsTest extends ObjectOperatorTest
{
    public function test(): int
    {
        foreach (range(1, 5) as $item) {
            if ($item > 3) {
                return 0;
            }
        }

        return 5;
    }

    public function testAnonymousClass(): void
    {
        new class() extends LowercaseKeywordsTest {};
    }
}