Begin work on extending the Pokédex.
Change internal Pokémon IDs to national dex ones.
Also expand the pokédex to 254 entries.
Merge branch '254'

Conflicts:
	home.asm
Fix saving pokédex flags.
Fix fossils.
Fix everybody being a spinner.
Merge branch '254'
Add a rudimentary debug menu
Stop Mew from being a special snowflake, space for more pokémon
Reserve more space in mon_palettes and mon_party_sprites.
Later main menu text printing, exported labels.
Untangle overworld Pokémon from trainers and possibly more
Blue is no longer a wild Pokémon
Fix Pokédex.
Fix Johto Wild Battle Night
Export the intro Pokémon
Use the first TitleMon instead of hardcoding
Fix Johto Rocket Themes
Fix OW Pokémon levels
Fix pokémon stats showing wrong palettes
New bug: Trainer palettes.  (whatever.)