A user provided an invoice that requires feature bit 30. (That bit is not in the spec)
To test:
```
lnbc1p324a66pp5tundykxx3q5kztsr8x00eknpn2uwe3394cnky3j9a0fswm568wnsdp9facx2mj5d9kk2um5v9khqueqv3hkuct5d9hkucqzpgxq9z0rgqsp5l73jgfgctzc92juer5rk2mqcrkj8teng53dr9vfxj4n8lulu4jmq9q8pqqqssq4gacn859tpzz99hkusnh7m93d5ncpx3t4zns8ynca7akmljpl5vh504qjz7dqwewqjh4md7xagaz5wg85knvxywrhp0sp2t09yta7lcq3qs6fy
lntb1p324a66pp5tundykxx3q5kztsr8x00eknpn2uwe3394cnky3j9a0fswm568wnssp5l73jgfgctzc92juer5rk2mqcrkj8teng53dr9vfxj4n8lulu4jmqdp9facx2mj5d9kk2um5v9khqueqv3hkuct5d9hkuxq9z0rgq9q8pqqqssqdte0z9dy7ur7fagsk7r3mtfj6upq88xfylhufys87zqpamklcfgn2f3xeq3nlhvn3qy9tdgg42vq9eq99qz6rz6tzqezfhzuv6zsr5qp7cgel4
```