feat: bump to v0.2.0 with asset_aliases for sprite-upgrade

Manifest changes:
- Version 0.1.0 -> 0.2.0
- New asset_aliases block: player + tiles + world all map to
  lib-asset.prototype-subterrain
- deps bumped: lib-core.maps 0.1.1 -> 0.1.2, lib-core.puppet
  0.1.0 -> 0.2.0
- New dep: lib-asset.prototype-subterrain 0.1.0

Rig, animations, tilemap, and init.lua updates land in follow-up
commits in this slice.

manifest.module

@@ -1,15 +1,21 @@
 {
     "id": "vagrant-skeleton",
-    "version": "0.1.0",
+    "version": "0.2.0",
     "kind": "module",
     "api": "^0.1",
     "ci_frames": 60,
     "entry_point": "init.lua",
+    "asset_aliases": {
+        "player": "lib-asset.prototype-subterrain",
+        "tiles":  "lib-asset.prototype-subterrain",
+        "world":  "lib-asset.prototype-subterrain"
+    },
     "deps": [
-        {"id": "lib-core.input",  "version": "0.4.0"},
-        {"id": "lib-core.camera", "version": "0.3.0"},
-        {"id": "lib-core.render", "version": "0.1.0"},
-        {"id": "lib-core.maps",   "version": "0.1.2"},
-        {"id": "lib-core.puppet", "version": "0.2.0"}
+        {"id": "lib-core.input",                  "version": "0.4.0"},
+        {"id": "lib-core.camera",                 "version": "0.3.0"},
+        {"id": "lib-core.render",                 "version": "0.1.0"},
+        {"id": "lib-core.maps",                   "version": "0.1.2"},
+        {"id": "lib-core.puppet",                 "version": "0.2.0"},
+        {"id": "lib-asset.prototype-subterrain",  "version": "0.1.0"}
     ]
 }