Major 7.52 features:

1.  Variety of new models and textures.
2.  Four new levels(Dm-Goregrinder, Dm-Zorn2k11, Ctf-Violator, Dm-Impact).
3.  Vegetation shadow mapping.
4.  Account system for stats.
5.  Improved stats algorithms.
6.  Various improved rendering effects.
7.  Decoupled renderer from client frame code.
8.  Variety of bug fixes and code cleanup.
9.  Changes to bot code, particularly in combat and movement.
10. Improvements to anti-camp.
11. Iqm version 2 support added.
12. Some weapon damages made more consistent.
13. Alien Force now has rapid fire on certain weapons.
14. MOTD now has option for display time.
15. Mouse input code cleanup.
16. Insta-Rocket game mode.
17. LOD cutoff distance now scales based on FOV and screen res.

Important SVN commits:

Revision: 2610
Author: irritant
Date: 11:17:46 PM, Monday, September 26, 2011
Message:
Fixed bug in tca-zion script.

Revision: 2609
Author: strat
Date: 9:32:09 PM, Sunday, September 18, 2011
Message:
Version updates for Autotools-related files.

Revision: 2607
Author: irritant
Date: 12:43:05 AM, Friday, September 16, 2011
Message:
Fix galaxy news feed.

Revision: 2605
Author: irritant
Date: 12:41:24 AM, Thursday, September 15, 2011
Message:
Updated Gamara skin.

Revision: 2603
Author: irritant
Date: 11:46:07 PM, Wednesday, September 14, 2011
Message:
Added glsl to ragdoll shell effect.

Revision: 2601
Author: irritant
Date: 1:29:48 AM, Wednesday, September 14, 2011
Message:
Fix grapple code to use old violator model instead of deathball shooter.

Revision: 2600
Author: irritant
Date: 12:59:04 AM, Wednesday, September 14, 2011
Message:
Switch old violator for grapple models.

Revision: 2598
Author: irritant
Date: 1:00:44 AM, Monday, September 12, 2011
Message:
W_weaps for all player models (new violator).

Revision: 2595
Author: irritant
Date: 12:29:21 AM, Saturday, September 10, 2011
Message:
New Violator.

Revision: 2591
Author: irritant
Date: 7:32:44 PM, Monday, September 05, 2011
Message:
Updated martian cyborg.
Updated vehicles.

Revision: 2590
Author: irritant
Date: 2:39:38 AM, Saturday, September 03, 2011
Message:
Martian skins updated.

Revision: 2589
Author: strat
Date: 1:56:39 AM, Saturday, September 03, 2011
Message:
Fixed ODE math precision CFLAG error in dev-makefile.

Revision: 2587
Author: xempx
Date: 2:16:40 PM, Friday, September 02, 2011
Message:
Much better bot navigation added.

Revision: 2582
Author: xempx
Date: 11:53:36 PM, Wednesday, August 31, 2011
Message:
Final Version of Zorn2k11
Fixed some bugs, improved the lighting along with textures, implemented some input and added bot navigation.
Changed the wrong texture paths, now pointing to "evil"s folder as it was intended.

Revision: 2580
Author: irritant
Date: 11:52:52 PM, Monday, August 29, 2011
Message:
Added glow effects to all player models(only when normalmapping is on!).

Revision: 2579
Author: irritant
Date: 12:44:49 AM, Monday, August 29, 2011
Message:
Fix crashing bug.
Validation file now written out so that it no longer needs to be deleted first.

Revision: 2577
Author: max
Date: 2:10:45 AM, Wednesday, August 24, 2011
Message:
Added a description string for Rigel's dodgedelay mod.

Revision: 2574
Author: max
Date: 11:06:44 PM, Tuesday, August 23, 2011
Message:
CVAR_GAMEINFO cvars now get sent if they differ from the inital default value.
Each cvar now has a default_value field which is set by Cvar_Get but not by 
Cvar_Set (and hence not through the console.)

Revision: 2573
Author: irritant
Date: 11:52:13 AM, Tuesday, August 23, 2011
Message:
Fix ragdoll crashing bug.

Revision: 2568
Author: irritant
Date: 12:43:01 AM, Tuesday, August 23, 2011
Message:
Add iqm v2 support.
Update iqm's to v2.

Revision: 2559
Author: max
Date: 4:02:33 AM, Thursday, August 18, 2011
Message:
Add support for the customary CFLAGS and LDFLAGS variables in dev-makefile.

Revision: 2558
Author: irritant
Date: 12:06:45 AM, Thursday, August 18, 2011
Message:
Fixed cryptohash compile errors.
Cleaned up account code.  Note - 7.52 is going to use md5, as there seem to be some consistency problems with the sha2 code.

Revision: 2553
Author: irritant
Date: 2:42:36 AM, Monday, August 15, 2011
Message:
Fixed shader bug.

Revision: 2552
Author: max
Date: 12:40:47 AM, Monday, August 15, 2011
Message:
Fix buffer overflow in intermission map-voting code.
This overflow sometimes caused memory corruption.

Revision: 2551
Author: irritant
Date: 11:28:40 PM, Sunday, August 14, 2011
Message:
Goregrinder, completed.
Fixed account server crashing bug.

Revision: 2548
Author: irritant
Date: 2:06:54 AM, Saturday, August 13, 2011
Message:
Goregrinder, mostly completed. Bsp uploaded.

Revision: 2547
Author: strat
Date: 5:23:21 AM, Sunday, August 07, 2011
Message:
File I/O fixes to statsgen to handle an empty database.

Revision: 2546
Author: strat
Date: 9:21:26 PM, Saturday, August 06, 2011
Message:
Quick fix for an rcon bug.

Revision: 2545
Author: strat
Date: 6:46:44 PM, Saturday, August 06, 2011
Message:
Beta for statsgen. Substantial changes to file i/o.
Modifies build project file adding preprocessor defines.

Revision: 2544
Author: irritant
Date: 12:41:46 AM, Thursday, August 04, 2011
Message:
Allow virgin passwords to be set. (i.e, person can switch computers, add in existing password).

Revision: 2539
Author: max
Date: 7:15:17 PM, Sunday, July 31, 2011
Message:
Add some better crypto hash routines (using SHA2 and "stretching")
Use these routines for the stats authentication system
Write out profile.cfg after each successful password change

Revision: 2538
Author: strat
Date: 4:22:14 PM, Sunday, July 31, 2011
Message:
Improve statsgen ranking calculation.

Revision: 2537
Author: strat
Date: 4:13:29 PM, Sunday, July 31, 2011
Message:
Add check for ODE init to prevent possibly misleading ODE assert fail.
Convert random weapon damage in 2 places to non-random. (Irritant: Review new damage numbers please.)
Update game_data.am.

Revision: 2536
Author: strat
Date: 1:01:35 AM, Saturday, July 30, 2011
Message:
Alpha test version of updated statsgen program with new math.
Contains some untested features, and lots of debug/test cruft.

Revision: 2533
Author: max
Date: 3:34:12 PM, Wednesday, July 27, 2011
Message:
Fix bug where disabling cl_blend turned blends black without disabling them.
Archive cl_blend.
Clear out color and depth buffers each frame when spectating out of map.
Changed the clear color from tactical nuclear pink to black.

Revision: 2530
Author: strat
Date: 2:14:30 AM, Saturday, July 23, 2011
Message:
Add a tuning tweak to packet rate limiting.
Change temporary testing data collection.

Revision: 2528
Author: strat
Date: 9:06:51 PM, Thursday, July 21, 2011
Message:
Rework and simplify packet rate limiting logic. Now is applied only when cl_maxfps is higher than default.
Autoconf version update to 2.68. Affects aclocal.m4 and configure.
Update game_data.am with files for new map and model rscripts.

Revision: 2527
Author: irritant
Date: 3:48:58 PM, Wednesday, July 20, 2011
Message:
Fix bug with dropping players from validation list.

Revision: 2522
Author: irritant
Date: 5:26:17 PM, Thursday, July 14, 2011
Message:
Update to account system.  This will allow players to be able to switch machines and re-enter their password to retain their account status.

Revision: 2521
Author: irritant
Date: 1:20:56 AM, Thursday, July 14, 2011
Message:
Added glowing fx to martian enforcers.

Revision: 2519
Author: irritant
Date: 4:40:38 PM, Wednesday, July 13, 2011
Message:
Fixed various bugs with accounts.
Simplified overall process, and made encryption more secure.

Revision: 2517
Author: irritant
Date: 11:31:36 PM, Tuesday, July 12, 2011
Message:
Updated statsgen to use verification.

Revision: 2516
Author: irritant
Date: 12:08:33 AM, Tuesday, July 12, 2011
Message:
Added password to menu.
Fixed bugs with password changing.
Stripped invalid chars for profile log files(server).
Cleaned up server code.

Revision: 2512
Author: irritant
Date: 12:16:50 AM, Saturday, July 09, 2011
Message:
Password now hashed prior to storing.  No raw passwords are ever sent or stored.

Revision: 2511
Author: irritant
Date: 11:47:19 PM, Friday, July 08, 2011
Message:
Added protocol for stats authentication server.

Revision: 2509
Author: tony
Date: 9:58:03 AM, Friday, July 08, 2011
Message:
Add new map images since last update

Revision: 2507
Author: tony
Date: 9:20:06 AM, Friday, July 08, 2011
Message:
Update IP to country flag mapping

Revision: 2505
Author: irritant
Date: 12:34:46 AM, Friday, July 08, 2011
Message:
More progress on authentication system.

Revision: 2504
Author: max
Date: 2:47:51 AM, Thursday, July 07, 2011
Message:
Warn the user when the client is out of date.

Revision: 2503
Author: max
Date: 2:20:17 AM, Thursday, July 07, 2011
Message:
Code to check the latest version of Alien Arena when loading the server list.
TODO: Actually warn in the main menu if the installed version is out of date.

Revision: 2501
Author: irritant
Date: 1:20:02 AM, Thursday, July 07, 2011
Message:
Initial account system checkin.  This is far from done, but most of the basic parts are in place and work.
Fixed shader bug with dm-neptune.
Cleaned up a variety of renderer code, mostly with shaders and trans surfaces.

Revision: 2496
Author: irritant
Date: 12:35:14 AM, Tuesday, June 28, 2011
Message:
New smartgun goo ammo.

Revision: 2492
Author: irritant
Date: 4:20:33 PM, Friday, June 24, 2011
Message:
Allow for negative forces on ragdolls(i.e gravitational pull towards a source).
Violator sucks ragdolls towards it if close enough.

Revision: 2491
Author: irritant
Date: 11:58:08 PM, Wednesday, June 22, 2011
Message:
Alien Force now allows for rapid weapon refiring.

Revision: 2489
Author: irritant
Date: 3:08:37 PM, Tuesday, June 21, 2011
Message:
Dm-impact completed!

Revision: 2484
Author: irritant
Date: 1:31:45 AM, Thursday, June 16, 2011
Message:
Some cleanups of shader code.

Revision: 2483
Author: strat
Date: 4:08:28 AM, Tuesday, June 14, 2011
Message:
Disable anticamp for bots and godmode, and fix obscure bot suicide/weapon select bug.
Update game_data.am for dm-impact.
Minor cleanups.

Revision: 2481
Author: blackice
Date: 2:59:22 PM, Monday, June 13, 2011
Message:
Attempt at new anti-camp system. Uses a history of past velocities to determine if players are camping.
The default values for its controlling CVars (ac_frames and ac_threshold) may need to be adjusted.
The previous version's behaviour can be emulated by setting ac_frames to 1 and ac_threshold to 300

Revision: 2474
Author: blackice
Date: 4:31:22 AM, Wednesday, June 08, 2011
Message:
Fixed a bug in MOTD printing (passing arbitrary data as printf's format string? Bad idea)

Revision: 2473
Author: blackice
Date: 4:14:56 AM, Wednesday, June 08, 2011
Message:
Added motdforce CVar which forces the MOTD to stay on for a while (this disables centerprinting)
Fixed potential buffer overflow in MOTD file reading
Moved some code to a separate, inline function in ClientThink (turns out that wasn't strictly necessary, but it's cleaner anyway so I'll leave it)

Revision: 2471
Author: blackice
Date: 4:06:30 PM, Tuesday, June 07, 2011
Message:
Mouse input - Common code moved to client, limited amount of code on both Unix- and Windows-specific directories
/!\ The code compiles on Win, but I cannot test it (AA doesn't start in VM) /!\

Revision: 2464
Author: max
Date: 7:20:30 PM, Wednesday, June 01, 2011
Message:
Fix mins and maxs for blue powernode.
This fixes a problem where they either dropped through or floated above the
floor, something red powernodes didn't do. (NOTE: Mappers should still
compensate for the bug and place these a few units high, for older servers!)

Revision: 2456
Author: strat
Date: 1:15:50 PM, Sunday, May 29, 2011
Message:
Add fix for low performance systems to packet rate limiting.

Revision: 2455
Author: irritant
Date: 1:26:28 AM, Friday, May 27, 2011
Message:
Completed vegetation shadowmap code.

Revision: 2451
Author: strat
Date: 4:18:40 AM, Wednesday, May 25, 2011
Message:
Decouple client-side network packet sending rate from video frame rate.
Miscellaneous cl_main.c cleanup.

Revision: 2450
Author: strat
Date: 4:12:05 AM, Wednesday, May 25, 2011
Message:
Revert non-working bot disruptor and blaster jumping.
Restore missing check for bot fuzzy aim dmflag.
Possible fix for bogus motion in intermission by zeroing velocity fields.

Revision: 2448
Author: irritant
Date: 12:01:54 AM, Wednesday, May 18, 2011
Message:
Some tweaks to bot attack code.

Revision: 2447
Author: strat
Date: 11:24:21 PM, Monday, May 16, 2011
Message:
Add Rigel's insta-rockets hybrid game mode,
and bot disrupter and blaster jumps,
and enhanced bot weapon selection, 
and announcement for team games ending in draw.
Fix bot "look down, run in circles" after rocket jump.
Fix sound configstring corruption when running .dm2 demos.
Correct typos in menu and other minor cleanups.

Revision: 2441
Author: irritant
Date: 5:57:42 PM, Friday, April 29, 2011
Message:
Finished ctf-violator

Revision: 2433
Author: max
Date: 4:43:04 AM, Thursday, April 21, 2011
Message:
LOD cutoff distance now scales based on FOV and screen res.

Revision: 2431
Author: irritant
Date: 12:09:29 AM, Thursday, April 21, 2011
Message:
New Alien Force model.

Revision: 2429
Author: irritant
Date: 1:35:37 PM, Wednesday, April 20, 2011
Message:
New double damage model.

Revision: 2424
Author: strat
Date: 9:07:50 PM, Sunday, April 17, 2011
Message:
Modify bots per Rigel's ideas.
New calculation for bot's "fuzzy" aiming.
Added bot skill cvar setting 3, forces all bots to skill level 3.
Added a (crude) game stats report to dedicated server log with bot aiming info.
Fixes for broadcast sounds, and bot info in first client.
Updated botinfo/sample.cfg.

Revision: 2422
Author: irritant
Date: 11:47:19 PM, Tuesday, April 12, 2011
Message:
Added new haste model.

Revision: 2421
Author: irritant
Date: 11:21:47 PM, Monday, April 11, 2011
Message:
Fix bug in TCA with wrong spider health percentage displayed.

Revision: 2419
Author: irritant
Date: 2:12:05 AM, Saturday, April 09, 2011
Message:
New sproing model.

Revision: 2417
Author: max
Date: 1:14:44 AM, Saturday, April 09, 2011
Message:
Fix for bug where misspelled map names in cfgs could glitch out servers.
Symptoms included spawning inside the floor, victory podiums not being
unspawned, and tca not working at all.

Revision: 2416
Author: irritant
Date: 1:10:10 AM, Friday, April 08, 2011
Message:
Added megahealth model.

Revision: 2415
Author: irritant
Date: 11:43:20 PM, Thursday, March 31, 2011
Message:
Replace silly _nm, _hm string compares with booleans.

Revision: 2414
Author: irritant
Date: 11:55:10 PM, Wednesday, March 30, 2011
Message:
Fixed bug with water causing strange probs.