Glenn's Gases 1.5.2 for Minecraft 1.7.x is now out! This is a very minor update. Features are listed below:

• Gas Tanks will now spill their contents when broken and will attempt by filling the surrounding area as much as they can.
• Fixed client-server sync issues with the WAILA plugin related to Gas Pumps and Gas Collectors. The WAILA plugin does not need to be updated for fix.
• Black Damp, Electric Gas and Corrosive Gas now generates in the world as it should.
• Nerfed gas bottle stack size to 16 from 64.
• Blocks of Refined Diabaline can now be crafted into 9 pieces of Refined Diabaline.
• KNOWN BUGS: Players named Wyld or CrustyMustard will also emit villager noises on contact with gases.

Psst. Soon you will be able to use flammable gas as an energy source for Thermal Expansion.