Version 1.0.2 with Maildir support

This release adds Maildir support under Unix systems¹.

It also brings a couple of additional fixes:

• Switches mail parsing to mail-parser which is just as fast but much more accepting of malformed emails (which was important because Maildir doesn't use CRLF).
• Fixes a bug where the values for To Name and To Domain were switched
• Fixes a bug where clustering by To name and To Domain would generate invalid SQL.
• Add Maildir test data from maildir2mbox

1. The Maildir crate doesn't support Windows. So it is disabled there for the moment. ↩