Add release name to deploy:info

[Propaganistas]

I always find myself adding a task to just show the release name.
Why not add it to the built-in deploy:info task?

[Schrank]

Nice idea! But stupid question: where is the release_name taken from? 😅

[Propaganistas]

@Schrank

deployer/recipe/deploy/release.php

Lines 9 to 14 in 51e8e82

	set('release_name', function () {
	return within('{{deploy_path}}', function () {
	$latest = run('cat .dep/latest_release || echo 0');
	return strval(intval($latest) + 1);
	});
	});

It just reads the (potentially) already existing releases log.
And because this file is always loaded, the definition of release_name will always be available.

[Propaganistas]

Added a failsafe for initial deployments