Claimable Balance and Asset Summary Changes

[paulbellamy]

The following changes to claimable balances, and assets endpoints were recently released in Horizon 2.2.0:

• [ ] The Asset object now includes the following new fields, with examples:

    ...
     "accounts": {
        "authorized": 23,
        "authorized_to_maintain_liabilities": 11,
        "unauthorized": 6
      },
      "num_claimable_balances": 3,
      "balances": {
        "authorized": "997268.0000000",
        "authorized_to_maintain_liabilities": "498634.0000000",
        "unauthorized": "249317.0000000"
      },
      "claimable_balances_amount": "124658.5000000",
      ...

• [ ] There is a new endpoint at /claimable_balances/{id}/operations{?cursor,limit,order}, to fetch operations for a given claimable balance.
• [ ] There is a new endpoint at /claimable_balances/{id}/transactions{?cursor,limit,order}, to fetch transactions for a given claimable balance.

Each SDK must update to support the first item in the list, so that the amount, and num_accounts fields can be deprecated in Horizon v3. Each SDK should update to support querying operations and transactions for a given Claimable Balance ID.

The SDF's JavaScript SDK released v8.2.0 recently including these changes.

If your SDK has implemented and released these changes, reference the release in a closing comment.

[bnogalm]

Implemented and merged on master