message: Add Supported Cosmos SDK versions for CosmJS 0.29.0 to README
  Closes
diff: @@ -8,6 +8,7 @@ A client library for the Cosmos SDK 0.40+.
  | CosmJS version | Supported Cosmos SDK version(s) |
  | ------------------------------- | ------------------------------- |
  +| ^0.29.0 | 0.44.x, 0.45.x, 0.46.x |
  | ^0.28.0 | 0.42.x, 0.44.x, 0.45.x |
  | ^0.27.0 | 0.42.x, 0.44.x, 0.45.x |
  | ^0.26.0 | 0.42.x |
  