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

Lua API: Fix Goals text being cut off at ca. 255 characters

More changelog updates

Changelog: Add 0.9.23 highlights, change headers, reorganize 0.9.23 engine updates, fix typos, mention some features

Use Gear^.Boom to calculate cake party faces

Fix cake party face not working across wrap world border

Make air mines follow hedgehogs across wrap world edge

Make GearsNear and CheckGearNear check gears across wrap world edge This fixes hog detection of mine, sticky mine, resurrector, seduction and crate across the world edge. Air mine is only partially fixed.

Add KoBeWi to credits

Update changelog

HedgeEditor: Fix broken napalm/mine strike/drill strike

Rope Knock Challenge: Don't count hog kills after hero hurt itself

Rope knock challenge: Add names of developers and Shoppa tournament players who ranked 1st/2nd/3rd The string freeze is maintained. The hog names are not localized. The string "points" is already in stub.lua.

Fix bee homing incorrectly when target is across wrap world edge

Wrap around target coordinates when clicking on other side of wrap-around world edge This fixes girder placement failure on other side (not across).

Move CalcWorldWrap to uUtils.pas

Add Wuzzy to credits I think I deserved it. :D

Fix AddAmmo setting ammo to 99 when trying to add infinite ammo This affected the portal mission, the crate only gave you 99 portal guns instead of infinite.

add copherneue

Fix division by 0 in sniper rifle training

Sniper rifle training: Fix missing victory sound, also disable controls at the end String freeze notice: This commit will display a caption with the string "Victory!". It does NOT violate the string freeze, as this string is already present in stub.lua.

Sniper rifle mission: Faster dynamite blow-up, also skip with precise

Sniper rifle training: Fix general camera weirdness - Camera bounced back and forth between shots - FollowGear was called every 20ms (way too often) - Now camera only re-centers when using sniper rifle - Camera also centers to dynamite once

Sniper rifle mission: Fix targets spawning twice in dynamite scenes, jacking up the total amount of targets

Fix small German typo

Fix GCC warnings: -Wimplicit-fallthrough and -Wint-in-bool-context

Fix PhysFS 3.0.0 deprecation warnings for error reporting

Fix compiler getting nervous about C++11 dependency