USER INSTRUCTIONS: You're walking around a 1-dimensional world

Current interact commands by entity / block:
 entities:
   player: move right, move left, inspect, inventory
 blocks:
   tree: chop tree

g_rocket just added an inventory and fixed a bug

Plans:
[√]Blocks could hold more than one thing.
[ ]Help functions.
[ ]It would be nice to know the commands that an object responds to (similar
to an inspector that shows the methods of a class)
[ ]shortcut commands e.g. "i" for inspect, "m r" for move right,