Updated to latest Psalm version and removed unused suppressions (#112)

* WIP - Updated to 4.4, fixed some issues found during analysis

* Removed unused Psalm suppressions

* Removed more unused Psalm suppressions, added some suppressions for known Psalm bugs

tests/FatalThrowableErrorTest.php

@@ -38,7 +38,6 @@ public function throwableProvider(): array
     public function testConstructor(Throwable $throwable): void
     {
         $throwableError = new FatalThrowableError($throwable);
-        /** @psalm-suppress RedundantCondition We need to test this to get full coverage */
         $this->assertInstanceOf(ErrorException::class, $throwableError);
     }
 }