A handful of minor fixes to cimpl. Probably nothing that will impact real-life use-cases, since these are all buried inside_AdminClientImpl, but they were bothering me.

1. Swaps"topic_names" and"future" inkws array inAdmin_describe_topics()

If a user tried to passtopic_names orfuture into_AdminClientImpl.describe_topics() as keyword arguments, they would end up swapped, which would lead to confusing errors.

2. RaisesTypeError inAdmin_list_consumer_group_offset() ifrequest is not a list
3. RaisesTypeError inAdmin_alter_consumer_group_offsets() ifrequest is not a list

In both of these cases, the library would raiseValueError ifrequest was a list with anything other than 1 item... but ifrequest wasn't a list, it would result in an internal error when it tried to access its first item.

4. Allows elements ofplist inpy_to_c_parts() to be instances of a subtype ofTopicPartition

If a user passed a list of instances of a subtype ofTopicPartition, the library would raise aTypeError, even if the instances were otherwise valid.