LOTS of things

- Replaces the Old Rod with the Candy Sack, an item to evolve Meltan into Melmetal. Meltan and Melmetal aren't in yet.
- Improves Gym Leader and Elite Four AI by a lot. They still use items, they're just better. Fixes XSpecial use while we're at it; before, it didn't actually increase the stat...
- The Scarlet Book now takes up both shelves, one section for each Paradox Pokemon. I also moved the bookshelf so it looks nicer.
- Text in Celadon University has been reduced significantly, taking up less memory and being a bit more RBY-like. It has also been made more accurate (thanks to Daiginjo for translating my booklet!)
- The Magikarp researcher in Celadon University now gives TM Dragon Rage (no longer unused!)
- Added a guard for Mt. Moon Crater.
- Removed TrainerNamePointers, Blank Leader Name Code, and Dakutens/Hakutens using a guide published by YakiNeen.
- PP no longer uses a shitty graphic and is instead properly implemented into the font, optimising the status screen. Also displays in-battle which is kinda cool.
- Lorelei, Bruno, and Agatha now play the Gym Leader theme, not just Lance.

Still unsure how to fix Celadon University's trainers, all I know is a lot of the information should be taken from the Oak fight I did. The code is radically different and doesn't call trainer headers at all. You'll likely want to start from scratch.

The Mt. Moon Crater Guard's text is a little wonky, not sure what's up there. May have been from the way I accessed Mt. Moon in testing. Anyway, if you want to mess around feel free.

constants/event_constants.asm

@@ -138,7 +138,8 @@
 	const EVENT_GOT_10_COINS
 	const EVENT_GOT_20_COINS
 	const EVENT_GOT_20_COINS_2
-	const_skip 2
+	;const_skip 2
+	const EVENT_GOT_TM23
 	const EVENT_1BF ; ???
 	const_skip 32
 	const EVENT_GOT_COIN_CASE

constants/hide_show_constants.asm

@@ -245,4 +245,5 @@ DEF SHOW EQU $15
 	const HS_POKEMON_MANSION_B2F_ITEM_1 ; E9
 	const HS_POKEMON_MANSION_B2F_ITEM_2 ; EA
 	const HS_ROUTE_1_OAK				; EB
+	const HS_MT_MOON_CRATER_GUARD		; EC
 DEF NUM_HS_OBJECTS EQU const_value

constants/item_constants.asm

@@ -84,7 +84,7 @@ DEF SAFARI_ROCK EQU $16 ; overload
 	const POKE_FLUTE    ; $49
 	const LIFT_KEY      ; $4A
 	const EXP_ALL       ; $4B
-	const OLD_ROD       ; $4C - replaceable
+	const CANDY_SACK    ; $4C - was old rod
 	const GOOD_ROD      ; $4D - replaceable
 	const SUPER_ROD     ; $4E
 	const PP_UP         ; $4F