The code was a bit messy and didn't make use of namespaces very well.
By converting to a set of functions (instead of a class) I can use
each function as a function pointer if I want to. I am also able to
remove libsaria/library.cpp since this was just a set of wrapper
functions to the old static class functions.
I don't actually perform a library update at this point, but I do create
a new task and add it to the update queue. When the run_task() function
is called, the task is removed from the queue and deleted.
