merge master

package.json

@@ -1,6 +1,6 @@
 {
   "name": "kredits-contracts",
-  "version": "5.5.0",
+  "version": "6.0.0",
   "description": "Ethereum contracts and npm wrapper for Kredits",
   "main": "./lib/kredits.js",
   "directories": {
@@ -60,7 +60,7 @@
     "yargs": "^15.0.0"
   },
   "dependencies": {
-    "ethers": "^4.0.47",
+    "ethers": "^5.0.2",
     "ipfs-http-client": "^41.0.1",
     "@kosmos/schemas": "^3.0.0",
     "node-fetch": "^2.6.0",