chore(release): Bump version to 1.1.5

fix: adding currency property to events (#60)

fix: use python 3.8 instead of 3.7

fix: fix test

chore: add more python versions

fix: adding currency property to events

chore(release): Bump version to 1.1.4

fix: allow none property value but not send (#54)

fix: allow none property value but not send

chore(release): Bump version to 1.1.3

fix: set group should set user property (#51)

fix: set group should set user propery

chore(release): Bump version to 1.1.2

chore: fix semantic release package version (#50)

Update publish-to-pypi.yml

chore: fix semantic release package version (#49)

chore: fix semantic release package version

fix: mutable defaults in init (#48)

Update test_client.py

fix: multi instances different storage provider

test: multi config diffrent storage provider

fix: default config as None

test: multi instances api key should be different