Make gtDuck use DirAngle instead of Angle for rotation

Fix sometimes ammo schemes not being saved after changing before an ammo scheme got deleted in session This was because the bool isDeleting is not initialized, so its initial value is unpredictable. Which means there's chance it starts with true, confusing the frontend.

one more pattern

Use maybeNick from Utils, fixes empty nickname inserted in ROOMS protocol command parameters. Not tested, but builds, and it's Haskell...

you know what... I think everything would have been fine if we'd simply required all this hog stuff to be in the same block...

w is in pixels, so presumably this needs to be *4

use pitch for surfaces, land_width x2 since 16 bit

Modernize Cargo.toml a bit

Remove silly toUtf8 which caused bug with default team name

Add a few random team names and fix typos

2nd try... just shortcircuit most of onGameTick20 when we are between turns.

this should probably sidestep that thing unc0rr keeps bringing up. untested. but then, I've never had it happen. I think what happens is onGameTick20 is called in same tick as onNewTurn and before it...

Update README.md: Add game description, controls, getting started guide for n00bs, fix typos, reorganize sections

Rewrite INSTALL file: Markdown format, add troubleshooting section, more detailed build instructions, etc.

ACF mission 5: Take away switch and always play with deployed hog in final mission stage