This fixes the following false-positive:
```php
function a(): bool {
$a = function(): bool { return true; }
return $a->call(new stdClass);
}
```
where psalm previously complained about (wrongly) inferred type to be
Closure
Affected functions/methods:
* `iterator_apply()`
* `iterator_count()`
* `IteratorIterator::__construct()`
* `iterator_to_array()`
This fixes the following false-positive:
```php
class Iter extends IteratorIterator {
public function __construct(Traversable $a) {
parent::__construct($a);
}
}
```
where psalm previously wanted `parent::__construct()` argument to be
`traversable` (all-lowercase).
* __wakeup is void -> void, see http://php.net/manual/en/language.oop5.magic.php#object.wakeup
* DateTime::__construct() does not accept null as time
* DateTimeZone::getLocation() has no last $object parameter
* ditto for DateTimeZone::getName()
* ditto for DateTimeZone::getTransitions()
* Add failing test
* Add visitor to soup up classlike references
* Move a whole bunch of code into the visitor
* Move some methods back, move onto analysis stage
* Use the getAliases method everywhere
* Fix refs
* Fix more refs
* Fix some tests
* Fix more tests
* Fix include tests
* Shift config class finding to project checker and fix bugs
* Fix a few more tests
* transition test to new syntax
* Remove var_dump
* Delete a bunch of code and fix mutation test
* Remove unnecessary visitation
* Transition to better mocked out file provider, breaking some cached statement loading
* Use different scheme for naming anonymous classes
* Fix anonymous class issues
* Refactor file/statement loading
* Add specific property types
* Fix mapped property assignment
* Improve how we deal with traits
* Fix trait checking
* Pass Psalm checks
* Add multi-process support
* Delay console output until the end
* Remove PHP 7 syntax
* Update file storage with classes
* Fix scanning individual files and add reflection return types
* Always turn XDebug off
* Add quicker method of getting method mutations
* Queue return types for crawling
* Interpret all strings as possible classes once we see a `get_class` call
* Check invalid return types again
* Fix template namespacing issues
* Default to class-insensitive file names for includes
* Don’t overwrite existing issues data
* Add var docblocks for scanning
* Add null check
* Fix loading of external classes in templates
* Only try to populate class when we haven’t yet seen it’s not a class
* Fix trait property accessibility
* Only ever improve docblock param type
* Make param replacement more robust
* Fix static const missing inferred type
* Fix a few more tests
* Register constant definitions
* Fix trait aliasing
* Skip constant type tests for now
* Fix linting issues
* Make sure caching is off for tests
* Remove unnecessary return
* Use emulative parser if on PHP 5.6
* Cache parser for faster first-time parse
* Fix constant resolution when scanning classes
* Remove test that’s beyond a practical scope
* Add back --diff support
* Add --help for --threads
* Remove unused vars
