This matches the minimum requirements for WordPress 6.0.2, which is currently the latest WP release. WordPress usage stats say that less than 3% of users are on PHP versions older than this.
Example:
```
$bitbucketPluginChecker->addFilter('vcs_update_detection_strategies', function($strategies) {
//Don't look for a "Stable tag" header in readme.txt.
unset($strategies['stable_tag']);
return $strategies;
});
```
To make this possible, the chooseReference() method was refactored into something that more closely resembles a "chain of responsibility" pattern. Instead of a tree of "if" conditions, it now gets an array of callables from another method, and it calls each of those in order until it gets a non-empty VCS reference.
You can filter this array to remove specific strategies, or even to add your own. Note that the item order matters.
Required PHP version was increased to 5.4 because some "strategies" take an argument and some don't, and I would rather just use closures for that than something more complex.
Coincidentally, testing this change revealed a bug where the HTTP filter name was not initialized correctly: it was missing the $slug. That should also be fixed now.
Prompted by #378
See #300. Apparently, when using the `files` autoloading mechanism, Composer will only include the files for one version of the library (i.e. the first one loaded). Let's see if we can fix that by switching to a `psr-0` autoloader. This requires a bunch of changes to the standalone autoloader and the factory registration process.
Yahnis Elsts