define a global page for shared content
make nib table global
autoclear filters instead of case-by-case
cache IDs in global variables where useful
merge some near-duplicated routines
optimise sector reordering
allow cancel when writing from RAM
pack universal RWTS dynamically to allow easier modification
consolidate output when modifying sequential nibble table entries
make Standard Delivery accept a parameter to specify table
switch unpacker to Exomizer for cross-platform support
make relbase dynamic for easier building
makefile for windows
