Nuclio-sdk

What's Changed
* Add QualifiedOffset object to store shard data by TomerShor in https://github.com/nuclio/nuclio-sdk-py/pull/38


**Full Changelog**: https://github.com/nuclio/nuclio-sdk-py/compare/v0.5.0...v0.5.1

What's Changed
* Introduce explicit ack methods by TomerShor in https://github.com/nuclio/nuclio-sdk-py/pull/37


**Full Changelog**: https://github.com/nuclio/nuclio-sdk-py/compare/v0.4.0...v0.5.0

e6cc56c Remove preceding "L" character before log output (32)

f183ffd Allow log float non-JSON compliant values (30)
4c54f56 CI - Add Python 3.9 (29)

Commits
7efb698 Enhanced logger encoder (28)
59687c1 Fix integration test (27)

Dropped support for python 2.7

Python 2.7 is no longer supported. use python 3.6 and above.

Internal deprecation note

Instead of
- `Event.from_json(...)`, use `Event.deserialize(data, kind=EventDeserializerKinds.json)`
- `Event.from_msgpack(...)` use `Event.deserialize(data, kind=EventDeserializerKinds.msgpack)`


a2fad69 CI: followup release job fix (26)
5aa07bf CI: Add release job (25)
f13cfad Support deserializing event strings w/o utf8 decoding (24)
a1b521a Bump bleach from 3.1.4 to 3.3.0 (23)
b621faf Fix CI github action (22)
cb30435 Use black as linter (21)
20fe5d7 Integration CI with nuclio (20)
c6bb192 Fix test run configurations (19)
58bb927 EOL 2, Long live 3 (18)