2.10.0

New features

• forbidArithmeticOperationOnNonNumber: deny arithmetic operations like $a + $b over non numbers (#180)
• forbidIncrementDecrementOnNonInteger: deny $i++, $i--, ++$i, --$i with any non-integer (#179)
• Add error identifiers to all rules: usable in upcoming PHPStan 1.11 (#140)