Llmflows

* Minor refactors of llm classes
* Updated urllib3 version
* Added support for Azure OpenAI models
* Added support for Google PaLM models

**Full Changelog**: https://github.com/stoyan-stoyanov/llmflows/compare/0.1.2...0.2.1

What's Changed
* Fix a typo Introduction.md by bweber-rebellion in https://github.com/stoyan-stoyanov/llmflows/pull/45
* added missing packages in pyproject.toml
* minor refactors to standardize LLM class methods

New Contributors
* bweber-rebellion made their first contribution in https://github.com/stoyan-stoyanov/llmflows/pull/45

**Full Changelog**: https://github.com/stoyan-stoyanov/llmflows/compare/0.1.1...0.1.2

What's Changed
* Adding support for claude by stoyan-stoyanov in https://github.com/stoyan-stoyanov/llmflows/pull/44
* LLM base classes refactors


**Full Changelog**: https://github.com/stoyan-stoyanov/llmflows/compare/0.0.12...0.1.1

- Fixed a bug with VectorDoc where in some cases the text in the metadata was incoreect

**Full Changelog**: https://github.com/stoyan-stoyanov/llmflows/compare/0.0.11...0.0.12

What's Changed
* fixed a bug with VecroStoreFlowStep when using `top_k` parameter
* Corrected a typo in the introduction page by dylanjsa in https://github.com/stoyan-stoyanov/llmflows/pull/39

New Contributors
* dylanjsa made their first contribution in https://github.com/stoyan-stoyanov/llmflows/pull/39

**Full Changelog**: https://github.com/stoyan-stoyanov/llmflows/compare/0.0.10...0.0.11

What's Changed
* fix typo in README.md flowstep example by tavisrudd in https://github.com/stoyan-stoyanov/llmflows/pull/34
* Fixed issues with api_key in LLM classes where api key could be only used when it is in env variables although this was not the expected behavior
* Minor updates in examples and README

New Contributors
* tavisrudd made their first contribution in https://github.com/stoyan-stoyanov/llmflows/pull/34

**Full Changelog**: https://github.com/stoyan-stoyanov/llmflows/compare/0.0.9...0.0.10