GET /v2/transactions

List transactions for one or more of: an account, a depository, or
an instrument — within a date range. Each result is one of the
polymorphic transaction `type` values listed in the resource page.

Path params: none.

Query params:
  accountId     (optional) — Account identifier
  depositoryId  (optional) — Depository identifier
  instrumentId  (optional) — Instrument identifier (filter to transactions involving this instrument)
  fromDate      (required) — First day in the period (inclusive, ISO 8601 date)
  toDate        (required) — Last day in the period (inclusive, ISO 8601 date)

At least one of accountId / depositoryId / instrumentId must be specified.
fromDate and toDate form a closed interval.

Response (200 OK):
{
  "data": [
    {
      "id": "string",
      "type": "<one of the transaction types>",
      "attributes": {
        "accountAmount": <number>,
        "tradeDate":     "ISO 8601 date",
        "valueDate":     "ISO 8601 date",
        "comment":       "string (optional)",
        "...":           "type-specific attributes — see the per-type spec"
      },
      "relationships": {
        "account":    { "data": { "type": "account", "id": "string" } },
        "instrument": { "data": { "type": "instrument", "id": "string" } },
        "depository": { "data": { "type": "depository", "id": "string" } }
      }
    }
  ]
}