fix type mismatch for Blob*s, fix grandom

encapsulate file data and length in Blob structure, enable seeking of data files

fix read/write to scope

fix errors reading and writing universe

finished adding random/scope functions, universe isn't writing...

implement chunk paging, moved some functions out of xrxs.c into user.c

use libString insead of static character arrays where useful, added some data structure stuff for realm master, random, and scope

README: consistency

added chunking/paging info to the spec

added new aux types: SCOPE, RANDOM, GRANDOM; updated spec

move realms under carts (realms per cart) and got carts realms and universes working

implemented some more functions and started putting it all together... realms aren't being saved on leaving; something's up

implemented functions for Universe and some for Realm; fixed find_cart()

refined some types, implemented byte/char reading from files, and implemented some cartridge functions

added MIT license and created headers and code files for all the types

add skeleton functions for write_ctl with documentation, tweak users table

self is always first in users list; implement logout

fix typos and tested writing to ctl from uxn. it works!

fix README

implement users table and users_read()

fixed a typo

update DESIGN document, put skeleton code in place

we can write to ctl; thanks sigrid :)

trying to write to ctl file

serve simple file directories over 9p

writerf(): write data to ramfile from serverside

playing with ramfs implemenatation

design notes on 9p directory structure

remove old files on build; fix fsread() a little bit; add options for different service models

first commit -- hello from 9p