Aio-snowplow-tracker

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Update python versions in run-tests script (256)
Fix pycontracts incompatibility with pyparsing v3 (255)

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Fix items default value issue in track_ecommerce_transaction (252)
Make optional timestamp argument set 'true timestamp' rather than 'device created timestamp' (251)
Pass successfully sent events through to on_success callback (228)
Restrict endpoint parameter as non-empty string for Emitter (249)
Add ability to set Subject per event (158)
Extract correct version in deploy workflow (182)
Support Unicode in adding events to buffer (162)
Use mocks for unit tests (250)
Replace regular file test operator in run-tests.sh (247)
Bump dependencies (246)
Add a Python 3 wheel to pypi (244)
Make sure that tracker attaches timestamp even if wrong type was passed (190)
Correct capitalization of Content-Type header (152)
Replace deprecating syntax (243)
Allow celery and redis to be optional dependencies (232)
Update gevent to the last major version (233)
Switch to GitHub Actions (234)
Allow custom json encoder to be passed when configuring tracker (242)
Update Copyright notices to 2021 (241)
Pin decorator package version for Python2 platforms (245)

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Fix incompatible versions of greenlet and gevent (closes 236)
Update build to Active Python Releases (closes 237)
Add Snyk monitoring (closes 238)
Update Copyright notices to 2020 (closes 235)

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Fix test_bytelimit test (227)
Initialize Celery in CeleryEmitter (226)
Allow non ascii characters to be encoded using Base64 (194)
Allow empty strings in string_or_none contract (184)
Fix on_failure param docstring description (225)
Bump max version requirement of redis (223)
Remove Vagrant & Ansible (222)

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Fix date for 0.8.0 release in CHANGELOG (183)
Remove Python 3.3 from tests (206)
Update PyPI deployment to use Twine (207)
Add version bounds for all dependencies (208)
Upgrade Celery to 4.x (210)
Fix flush argument clash with async keyword (211)
Add Python 3.7 to test suite (close 212)

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Add byte_limit to Emitter (170)
Add support for dvce_sent_tstamp (159)
Use SelfDescribingJson class to build payload_data JSON (141)
Add ability to automatically send all events in buffer at a regular time interval (114)
Add support for attaching true timestamp for events (161)
Use exact dependencies versions and remove requirements.txt (175)
Add missing dependencies (174)
Remove Python 3.2 from travis testing (173)
Add missing classifiers to setup.py (148)
Add additional supported platforms to Subject (172)
Add missing tracker events (165)
Add support for Python 3.4 and 3.5 (169)
Add `track_self_describing_event()` method (160)