15f6bacec9 api: Run just check-api (Ryan Breen)
9684d496bb Add is_standard_op_return (Ryan Breen)
Pull request description:
This is the suggestion for #2292 to check OP_RETURN length
ACKs for top commit:
apoelstra:
ACK 15f6bacec9
Tree-SHA512: e346b5eff7cc40b98a08948c83cb5c064184541d819c37a977e432ec09df7f9e1a074f16a4df598142784bd875f1379e2b0848fe898923e4e12829f85b4c4520