WIP Generic data handling and caching

Add basic support for reimbursements via new, generic data handling
functions.

package.json

@@ -29,7 +29,7 @@
     "@ember/optional-features": "^1.3.0",
     "@glimmer/component": "^1.0.0",
     "@glimmer/tracking": "^1.0.0",
-    "@kosmos/schemas": "^2.2.1",
+    "@kosmos/schemas": "github:67P/kosmos-schemas#feature/browser-compat",
     "babel-eslint": "^10.1.0",
     "babel-preset-es2015": "^6.22.0",
     "babelify": "^7.3.0",
@@ -66,7 +66,7 @@
     "eslint-plugin-ember": "^8.5.2",
     "eslint-plugin-node": "^11.1.0",
     "ethers": "^4.0.47",
-    "kredits-contracts": "^5.5.0",
+    "kredits-contracts": "github:67P/kredits-contracts#feature/expenses",
     "loader.js": "^4.7.0",
     "localforage": "^1.7.3",
     "ndjson": "github:hugomrdias/ndjson#feat/readable-stream3",