Bulk create transactions is Deprecated

[demonno]

Ynab Deprecated Bulk create transactions

See: https://api.youneedabudget.com/v1#/Deprecated

Instead /budgets/{budget_id}/transactions is used to Create a single transaction or multiple transactions

Would be nice to mirror new API behavior

• Depreciate bulk_create_transactionsand
• Refactor create_transaction to handle both cases

[zappingseb]

I would also encourage this feature... The rate limit kills my current application