[DOC] update history to note removed endpoints
[FEATURE] allow user to pass last ledger sequence as part of the POST /payments
Merge pull request #194 from boxbag/payments-last-ledger-sequence

[FEATURE] allow passing last ledger sequence as part of the POST /payments API endpoint request body
[TASK] bump ripple-lib to 0.9.2-rc1
[TASK] bump ripple-lib to 0.9.2-rc2
[TASK] refactor getTransactionHelper
[TASK] rename paymentIsValid to isPaymentValid
[TEST] refactor fixtures
[TASK] add validated query parameter to submit payment route
[TASK] remove unused remote
[FIX] fix code corresponding to comments in pull request
[TASK] rename getTransactionHelper to getTransaction and getTransaction to getTransactionAndRespond in transaction.js locally. Did not modify express route
[FIX] account for submission error case with validated="true" flag set