Render weaker distant stars
Use entity component system architecture
Convert planet into generic entity
Add acceleration component
Let rendering system do all rendering
Sort entities by z pos
Remove Entity type
Move ship pos into component
Do not keep on updating image component
Add velocity component to ship
Add angle component to ship
Add acceleration component to ship
Remove unused ship attributes
Add physics system
Move acceleration into physics system
Add steering system
Turn ship into a dumb entity
Rename ImageRenderSystem to RenderingSystem
Move input handling into input system
Store max angular velocity in velocity component