Supply log topic as bytes

[carver]

What was wrong?

It's pretty natural to want to supply a log topic as a 32-byte bytes value instead of a hex string.

Right now, only hex-encoded strings of 32 bytes are supported.

How can it be fixed?

Add tests that 32-byte values will be accepted, like these, but with a decode_hex():

eth-tester/tests/core/validation/test_inbound_validation.py

Lines 160 to 165 in 035dde2

	(_make_filter_params(topics=[TOPIC_A]), True),
	(_make_filter_params(topics=[TOPIC_A, TOPIC_B]), True),
	(_make_filter_params(topics=[TOPIC_A, None]), True),
	(_make_filter_params(topics=[[TOPIC_A], [TOPIC_B]]), True),
	(_make_filter_params(topics=[TOPIC_A, [TOPIC_B, TOPIC_A]]), True),
	(_make_filter_params(topics=[[TOPIC_A], [TOPIC_B, None]]), True),

Add tests that 31 or 33-byte values are not accepted.

Add tests that the logs are correctly found when a bytes-value is supplied to create_log_filter():

eth-tester/eth_tester/utils/backend_testing.py

Line 1145 in 2098d83

def test_log_filter_picks_up_new_logs(self, eth_tester, filter_topics, expected):

Implement any conversions needed to make ^ pass.