Add list of TODOs

TODO

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+# TODO
+TODO of TODOs: move these into issues
+
+## Player
+* Jumping
+* Climbing and ladders/ropes
+* Metasprite animations (walking, jumping, climbing)
+* Inventory
+* Combat statistics
+* Basic attack by pressing A
+
+## Items
+* Item entity type
+* Render item on map
+* Player item pickup to inventory
+* Player pickup (press B? collide?)
+
+## Monsters
+* Monster entity type
+* Render monster
+* Metasprite
+* Take damage if attacked
+* Death 
+* Attacks (animations + closed curve movement + speed)
+
+## NPC
+* NPC entity type
+* Read NPC description from file
+* Render NPC
+* Scrolling text display engine
+* Render NPC dialogue
+* Dialogue prompt
+    * Prompts should present themselves as a modal containing a set of buttons
+      corresponding to a provided set of replies
+    * Cursor to select button
+    * Clicking button updates NPC state with response
+
+## Quests
+* Extend dialogue to display item requests
+* Keep track of completed quests
+
+## Maps
+* 32x32 maps
+    * Implement map scrolling through SCX/SCY
+    * Update collision routine to fetch new index
+* NxM maps (where N, M > 32)
+    * Long way off, may not make it
+* Portals between maps
+    * New collision map flag
+    * Transition between maps on collision
+
+## General
+* Generalize metasprites to work across monsters, players, NPCs
+* Metasprites of different sizes? (Could enable boss monsters)
+* Battle formula