Removed ".data" filetype, as Rust can't seem to load custom named libraries at compile time. Perhaps this will change in the future.
    However, this may be a beneficial limitation, as
    a) it ensues databases are differentiated per platform ("was this .data compiled for lin or win? hmm.."), and
    b) it makes linking routines to routines slightly more unpleasant. Which is good, as it should never be done anyway.
Got the core of runtime database linking functioning! Routines can now modify database data!

As of this point, Worldsong is a working proof-of-concept!