Post-release bugfixes: Batch 1

This commit fixes the following bugs:

- A guy in Celadon University was stuck in a tree due to being placed on the wrong tile.

- It was possible to walk out of bounds in Mt. Moon Crater due to buggy collision near the bottom of the map

- Hi Jump Kick had a slightly glitched animation

- It was possible to walk into a specific rock in both Cerulean Cave and Garnet Cavern. This was a vanilla bug too, but I'm fixing it proper now.

- There was no signpost outside Bill's Lighthouse where there should've been.

- Fixed two errors in the README

- The Fissure TM was not purchasable at the Citrine Rocket house

- Even if you had picked one of the original starters, you could still get the Charmander and Squirtle gifts as the NPCs would show up regardless.

- Trying to get the Squirtle gift with a full party and box would lock you out from getting it

- Fixed a text issue in Celadon Uni where the professor states the wrong TM

- Fixed two text issues in Silph Co

scripts/VermilionCity.asm

@@ -287,6 +287,7 @@ OfficerJennySquirtle:
 	ld [wDoNotWaitForButtonPressAfterDisplayingText], a
 	lb bc, SQUIRTLE, 16
 	call GivePokemon
+	jp nc, .fullParty
 	ld a, [wAddedToParty]
 	and a
 	call z, WaitForTextScrollButtonPress
@@ -303,6 +304,14 @@ OfficerJennySquirtle:
 .noBadge
 	ld hl, OfficerJennyNoBadge
 	jr .done
+.fullParty
+	ld hl, JennyFullParty
+	call PrintText
+	ld a, [wSimulatedJoypadStatesEnd] ; ensuring that the text doesn't autoskip.
+	and a ; yep, here too.
+	call z, WaitForTextScrollButtonPress ; and here.
+	call EnableAutoTextBoxDrawing ; and here.
+	; falls through to the next quote.
 .refuse
 	ld hl, OfficerJennyRefuse
 	; fallthrough
@@ -331,6 +340,10 @@ OfficerJennyHowDoing:
 	text_far _OfficerJennyText5
 	text_end
 
+JennyFullParty:
+	text_far _JennyFullParty
+	text_end
+
 EventVermillionCitySSTicket:
 	text_far _SSAnneFlashedTicketText
 	text_end