Hello, this is my mod and I've used version 42.3 source code (the latest wouldn't compile)
And this post is always the latest.
download the compiled version (windows only) here:
http://www.mediafire.com/?azyeeimpky7aydx
or the source here:
http://www.mediafire.com/?2jgf3m54circ36o

It includes:
Metal edited so it rusts and is grey,
Gold: Like metal but doesn't rust,
Magnesium:like metal but burns when put in contact with burning magnesium (very hot glowing stuff)
Dofe:my version of Bizzare, also neutralises acid.
Barinilium: An explosive gas, I invented the name.
CO2: Turns to oxygen with plant (photosynthesis) and makes carbonated water.
Limestone: heats to make glowing limelight, which cools to quick lime wich turns to slaked lime with water, which turns to limewater with distilled water, which turns back to limestone with CO2
ooze: pointless liquid, boils to swamp gas.
swamp gas: flammable gas.
enzyme: turns carbohydrate to sugar.
Carbohydrate: turns to sugar with enzyme.
Sugar: slightly flammable, mix with water to make sugar water.
Yeast plate: a solid which makes yeast grow.
Lemonade:sugar water and carbonated water (a bit glitchy) bad for stickman.
bacteria: turns wood, water, carbohydrate, sugar, plant and yeast to bacteria.
Virus turns everything to virus (fun to use on destroytable city).

New to version 2:
Co2 makes plant grow flowers not photosynthesise.
Carbonated water puts out fire very well.
virus and bacteria super speed bug fixed.
Flower: grows on plant add polen to get seed.
pollen: see above.
seed: turns to grass when hits mud.
grass: water it to make it grow upwards!
Autumn leaves: appear when plant is surrounded by oxygen and suffoated, flammable.
Grav: center of gravity, like black hole but doesn't destroy stuff it touches, for planets.
Saltpeter: mix with sulfur for gunpowder, saltpeter is made by mixing water with Liemstone.
Sulfur: Slightly flammable mix with Hydrogen for Hydrogen sulfide. See above^.
H2: Hydrogen, flammable mix with O2 for water. See above^
Hydrogen sulphide: Flammable poisonous to stickman gas.
Food: stickman can eat it for health.

New to version 3
no more freon, instead anti-lava.
Lavabomb:explodes on contact with anything.
antilava bomb: same as above but with anti-lava
Sorry for so few new elements but I'm out of space (see later post below.)

If I can get my space up I'll add:

SLRP: Solarpanel
QRTZ:Quartz like diamond but slightly breakable.
GROW:Turns into whatever it touches thus making it grow
HETR:Tutorial element
COLR: Opposite of heater
LDMD:Liquid diamond.
PLTC:Plastic compressed oil.
SACD:Super acid
SDST:Saw dust broken wood.
TNT: Hmm wot do you think this does?

thank you