v0.6.0

What's Changed

Assistants API support by @nicnilov in https://github.com/mgallo/openai.ex/pull/58
Add support for Audio/Create Speech by @shawnleong in https://github.com/mgallo/openai.ex/pull/57
stream functions now stream by default to self(), so it is easier to use these functions without passing inline config (#54)

@nicnilov made their first contribution in https://github.com/mgallo/openai.ex/pull/58
@shawnleong made their first contribution in https://github.com/mgallo/openai.ex/pull/57

Full Changelog: https://github.com/mgallo/openai.ex/compare/v0.5.4...v0.6.0