Eliminated extra energy throughout the year. Increased respiratory costs throught the year
Optimized the way in which the last grain is kept
Add grain size output
Made harvest amounts a property of a GrainSystem rather than its state
Added GrainState::operator/=() and GrainState::operator*=() and GrainState::operator+=()
Set debug flags manually.
Fixed spelling mistake

Conflicts:
	lib/grain_system.hpp
Ignore "output.png"