Add changelog (markdown formatted)

CHANGELOG.md

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+# Engine
+
+### 0.4.10.4 (dev)
+
+  - license switched to GPLv3
+  - start using c++11 features
+  - server: lot of speed optimizations
+  - real liquids
+  - real liquid optimized: processing up to 150000 nodes per second
+  - weather (now fully adjustable): melting, freezing, seasons change, [ugly] snow and rain
+  - rewrited pathfinder (Selat)
+  - api for key-value storage (Selat)
+  - circuit (Selat)
+  - auto reconnect if connection lost
+  - do not save not changed generated blocks (reduce base size 5-20x) [save_generated_block = 0]
+  - farmesh - lost detail on far blocks, allow to view landscape with 500-1000-+ range (very dev) [farmesh = 2]
+  - Save user/pass for every server [password_save = 1]
+  - Unicode support in chat, inputs, player names
+  - server: enable_any_name=0 # allow any player names
+  - optimized block sending - farther range
+  - Various death messages
+  - Mandelbulber fractal generator included for math mapgen
+  - lot of stability fixes
+  - DRUN_IN_PLACE=1 now by default ALL PACKAGE MAINTAINERS NEED TO ADD -DRUN_IN_PLACE=0 to build scripts
+  - Added map thread (liquid, lighting, map save) - server step closer to 100 ms
+  - client: Removed vmanip from mesh making - adds some fps
+  - Auto repair broken leveldb db
+  - Math and indev mapgens
+  - v5 mapgen
+  - minimap (gsmapper) (dev)
+  - drowning in sand/dirt/gravel
+  - initial shadows from objects [shadows = 1]
+  - Using more threads for server (server, env, liquid, map, sendblock), removed envlock. (but lua still singlethreaded) can disable in config: [more_threads = 0] or cmake: -DDISABLE_THREADS=1
+
+#### incompatible with minetest changes:
+  - players data files saved to leveldb storage
+  - new leveldb map key format: "a10,-11,12" instead of 64bit number (freeminer can read minetest maps, but writes to new format)
+
+### 0.4.9.3
+
+  - Wieldlight. Grab a torch and see the magic. (Zeg9)
+  - Texturable sun and moon. (RealBadAngel)
+  - /die command
+  - Directional fog + horizon colors, based on sun & moon positions at sunrise / sunset (MirceaKitsune)
+  - Support for colors in chat; API is available for mods
+  - LevelDB is now used by default as map storage backend whenever available. Official Windows build will ship with LevelDB support from now on.
+  - Multiple columns in player list (TAB key).
+  - Third person view, press F7 to cycle through available modes. (BlockMen)
+  - A lot of boring bugfixes, performance improvements and other stuff.
+
+### 0.4.8.2
+
+  - Greater FOV (field of view) when running. (Jeija)
+  - Zoom a-la optifine (z key) (Exio4)
+  - Force loading world: entities has new force_load attribute, when set the engine won't unload blocks near them. (Novatux)
+  - New API method freeminer.swap_node which preserves node metadata while replacing it. (Novatux)
+  - New main menu. (xyz)
+  - Renamed minetest.conf to freeminer.conf
+  - Renamed default minetest_game to default
+-- 0.4.8.0
+  - 99% lag-free; optimized server can handle 50-100-... players; no problems with laggy mods even on slow hardware
+  - Much faster on client (VBO, can eat memory), increased view and send range (PilzAdam)
+  - Directional fog + horizon colors based on sun & moon positions (MirceaKitsune #799 #772)
+  - Adjustable dynamic weather and liquids (it's possible to define number of liquid levels in node)
+  - Weather defined water or ice on map generation. (freezed oceans if low temperature) and dirt_with_snow instead of dirt_with_grass when too cold.
+  - Cave trees in huge caves (indev mapgen)
+  - Optimized falling (much less mid-air stuck, limited max falling speed, more air control at high-speed falling)
+  - Fixed and optimized headless client (you can run 30-50 bots on one PC)
+  - Hell (very hot at -30500), everything melting and burning
+  - Slippery (Zeg9 #817)
+  - Diagonal Rail (khonkhortisan #528)
+  - Improved (re)spawn (don't spawn in stone) (sweetbomber #744)
+  - Player list, viewable by holding TAB key (sfan5 #958)
+  - Improved math mapgen: more (10+)generators from http://mandelbulber.com/, all params are adjustable
+  - And some small bugfixes and improvements.
+
+***************
+## API changes
+
+### 0.4.10.4 (dev)
+
+  - minetest.set_node(pos, node, fast) - new fast param. may caue light bugs, but fast
+  - minetest.remove_node(pos, fast) - fast remove param
+### 0.4.8.0
+
+  - New node groups: freeze, melt, hot, cold (define temperatures); learn how to use them here
+  - New node group: slippery
+  - minetest.register_abm({…, action(…, neighbor)})
+      the action function has a new parameter called neighbor which will contain a node that was matched as a neighbor
+  - minetest.register_abm({…, neighbors_range = 4})
+      maximum radius to search for a neighbor in (for example, melting snow in 4×4 area around torch)
+  - minetest.get_surface (sapier #640)
+
+****************
+## Game changes
+
+### 0.4.10.4 (dev)
+
+  - TNT mod
+  - Bucket fixes
+  - Drop torches, plants from liquid
+
+### 0.4.8.0
+
+  - Weather support (liquids freeze,melt; plants,trees growing; dirt transforms, ...)
+  - Rain, snow
+  - Melting stone at high temp (at -30600)
+  - Slippery (ice, snow)
+  - Biomes for mapgen v7 and math
+  - sponge:sponge sponge:iron
+  - Weather defined tree and flowers growing
+  - Dirt, sand and gravel will fall off the edges (try to build something ;)
+  - Furnaces burn items even when they are unloaded
+  - Moonflower (MirceaKitsune #175)
+  - Small fixes