The game prototype has been updated (0.3.8):

• Oil and Oilfield have been added. This also changed how Bombs are crafted (now it's: Oil + Copper Ingot + Sulfur)
• Oil Lamp added. A light source that can be put in your backpack. It can light Bombs and torches. Refillable with more oil.
• An upgradeable town building: Woodcutter. The Woodcutter generates stick over time. Upgrade required coins.
• Day/Night cycle indicator. It's especially useful to know about the transition period (day to night vs night to day).

More Town Buildings with upgrade options are planned. Stay tuned!

Cheers,

Matt