Preheat the oven to 350°F. Line a baking sheet with parchment paper. In a large bowl, combine the flour, baking powder, baking soda, salt, cinnamon, cloves, ginger, and allspice. Using a stand mixer fitted with the paddle attachment, combine the coconut oil, sugar, molasses, milk, and maple syrup, beating on medium speed for several minutes until creamy, and stopping to scrape the bowl as needed. Mixing at low speed, add the dry mixture about 1⁄2 cup at a time, over about a minute or so. Continue blending until the dough comes together in one or two balls on the paddle, separating cleanly from the inside of the mixing bowl. Transfer to a clean, dry countertop. Roll out the dough to about 1⁄4 inch thick. (If you are having trouble rolling the dough—if it is sticking—sandwich the dough between two sheets of parchment paper and roll your pin on top of the parchment, instead of directly on the dough.) If the dough has become too pliable (this may happen if your room is slightly warm), transfer to the fridge for 10 to 15 minutes to firm slightly. Once rolled fairly evenly to 1⁄4 inch thick, use cookie cutters to cut the dough into shapes. A spatula (offset or regular) will help lift the cookies off your counter and to the prepared baking sheet. Space the cookies at least an inch or so apart. Bake for 10 to 11 minutes. Remove from the oven and let cool on the pan for at least a couple of minutes. The cookies will firm more as they cool, and even more after they are chilled. Refrigerate the cookies in an airtight container. Decorate as desired, such as with the simple gingerbread icing.