Remember when Lach recorded their live reaction to 2.2 so far? Do you recall what the reaction to ACZ3 was?

If you don't, the reaction was "WHAT?? Why is he here? This is GREAT but, what??" And while the reaction is on the positive end of things, it's stll clearly not advisable for our defining Big Reveal of the already huge update.

To this end: Here is a mini cutscene! https://cdn.discordapp.com/attachments/428262628893261828/626207624043429898/srb20005.gif
* He's digging through Eggman's trash.
* Clearly doesn't expect to see you!
* Ready for a fight all the same.
* You can attack him during the mini cutscene if you're impatient.
* Skipped if you give him MTF_AMBUSH.
* Requires new assets (including map) to test, but I'm not ready to make a MR yet because I have other thoughts first.

Also, since I was poking around in p_enemy.c, I fixed A_Boss1Laser's issues (not working with direct 2.1 port states and having the weird secondary attack).

How did this even happen??

Small hitbox tweaks

See merge request STJr/SRB2Internal!341

Mark new-style log names as loaded in addons menu

See merge request STJr/SRB2Internal!340

* Improve logfile print. (I know Steel wanted it gone entirely, but I feel like it's relevant to have it in game..?)

Camera fixes

Closes #105

See merge request STJr/SRB2Internal!303

New animated DSZ kelp (plus ACZ cacti & DSZ coral)

See merge request STJr/SRB2Internal!332

Some Player fixes and enhancements

Closes #216, #219, #222, and #224

See merge request STJr/SRB2Internal!334

Better directory structure

See merge request STJr/SRB2Internal!321

Support W_VerifyFile on PK3

See merge request STJr/SRB2Internal!328

Timerres fix

Closes #213

See merge request STJr/SRB2Internal!338

Camera Options submenu

See merge request STJr/SRB2Internal!337

Use byteptr.h macros in flats png

See merge request STJr/SRB2Internal!339

Disable some code which sometimes makes the player enter walking frames when jumping up to a platform, such as the CEZ3 buttons, despite still being in jumping mode.

If this causes more problems than it solves it can be reverted, but doing a bunch of playthroughs of DSZ1/2, GFZ1, and CEZ3 didn't seem to uncover anything, so I'm tentatively putting it in this branch.

* Fix some other landing weirdness with CA_BOUNCE.

* Lower default swim animation speed.
* Make speed of flight/swim animation increase whenever mashing jump.

Pain sound fixes

See merge request STJr/SRB2Internal!335

* Fix native MF_PAIN sound extension being limited to UINT8 range, which only became evident when the new s1/2/cd/3db/kc sfx were added.
* Make the pain-causing cactodes have DMG_SPIKE.