Exception constraints consistency

[pkruithof]

I've noticed that not all assertions pass their constraints to the exception, for instance:

eq has the expected value passed to the exception:

assert/lib/Assert/Assertion.php

Lines 305 to 313 in c07fe16

	if ($value != $value2) {
	$message = \sprintf(
	static::generateMessage($message ?: 'Value "%s" does not equal expected value "%s".'),
	static::stringify($value),
	static::stringify($value2)
	);
	throw static::createException($value, $message, static::INVALID_EQ, $propertyPath, array('expected' => $value2));
	}

greaterThan on the other hand, has not:

assert/lib/Assert/Assertion.php

Lines 2074 to 2082 in c07fe16

	if ($value <= $limit) {
	$message = \sprintf(
	static::generateMessage($message ?: 'Provided "%s" is not greater than "%s".'),
	static::stringify($value),
	static::stringify($limit)
	);
	throw static::createException($value, $message, static::INVALID_GREATER, $propertyPath);
	}

I would like to make this consistent across all assertions, in the following manner:
For every assertion, every argument between the asserted value and the message is part of the $constraints array, passed to the exception.

Please let me know if you'd consider this, then I'll make a PR for it.

[rquadling]

Happy to accept a PR to make things consistent.