".phar" in the filename (or already have stub/alias)
* allow read/write on .tar/.zip files that do not contain a stub or alias
* prevent manual addition of stub via $a['.phar/stub.php'] = '<?php my stub';
+ * investigate potential collision between SPL's DirectoryIterator flags and
+ those in phar_archive_data
+ X implement initial support for simple zip/tar archives (PharData) [Steph]
X make createDefaultStub() setDefaultStub() and have it file format-specific
[Steph]
X convertTo*() should always use the default stub [Steph]