Trigonometric input capping

See merge request STJr/SRB2Internal!343

Controller hotplug support.

See merge request STJr/SRB2Internal!342

Changed any instance of "joystick" in strings to "gamepad"
Renamed some cvars
Added a define for MAX_JOYSTICK
Added back the missing command line params.

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.