Today:
* OAI Extractor
    - Resumption
        . Caches resumption tokens and last article id seen
        . No actual resumption yet.
    - Incremental updates
        . via --oai-incremental-start-date

* Config
    - Singleton factory by path
        . Smarter path handling and default management
    - Saving
        . To load path or given path
    - Visitor pattern for argument management
        . Argument parser accumulates list of visitors
        . Visitors specify which arguments to parse for
        . Allows singletons to gain arguments from any source without overwriting others

* MySQL Database
    - All tables in place
    - Composite PKs and FKs for link tables
    - utf8 with utf8_unicode collation for crazy european names and article titles

Tomorrow:
o MySQL Loader (all day)
o Transformer
    o Parse msc_class into lists