Add doctype and charset to test output
Fix error test
Make test resuts a bit prettier
Improve addressing tests
Fix Russian and Polish corrupted language files, make sure all use UTF-8
Remove BOM from chinese language file
Make sure file descriptior is closed in EncodeFile
Fix private access problems to SMTP error message by adding getError function (caused by recent addition of SMTP error reporting)
All unit tests now pass
Note that it doesn't apply this restriction to ReplyTo as it's not unreasonable to have an address you're sending to also being a reply address
Add a GetAttachments function, which is needed to stop unit test from breaking (attachments are private)
Fix some inconsistent phpdoc syntax, make sure scripts have a page-level docblock and version tags
Remove compiled phpdocs from repo
Add docs.ini config file for phpdoc: use `phpdoc -i docs.ini` to generate docs.