Crewai

- Overall doc + readme improvements
- Fixing RPM controller being set unnecessarily
- Adding early stage anonymous telemetry for lib improvement

- quick Fix for hierarchical manager

- Adding `manager_llm` for hierarchical process
- Improving `max_inter` and `max_rpm` logic
- Updating README and Docs

This new version bring a lot of new features and improvements to the library.

Features
- Adding Task Callbacks.
- Adding support for Hierarchical process.
- Adding ability to references specific tasks in another task.
- Adding ability to parallel task execution.

Improvements
- Revamping Max Iterations and Max Requests per Minute.
- Developer experience improvements, docstrings and such.
- Small improvements and TYPOs.
- Fix static typing errors.
- Updated README and Docs.

New Contributors
* prabha-git made their first contribution in https://github.com/joaomdmoura/crewAI/pull/168
* scott------ made their first contribution in https://github.com/joaomdmoura/crewAI/pull/161
* EliadCohen made their first contribution in https://github.com/joaomdmoura/crewAI/pull/191
* itlackey made their first contribution in https://github.com/joaomdmoura/crewAI/pull/188
* gvieira made their first contribution in https://github.com/joaomdmoura/crewAI/pull/187
* ilyasudakov made their first contribution in https://github.com/joaomdmoura/crewAI/pull/210

- Moving to LangChain 0.1.0
- Improving Prompts
- Adding ability to limit maximum number of iterations for an agent
- Adding ability to Request Per Minute throttling for both Agents and Crews
- Adding initial support for translations
- Adding Greek translation
- Improve code readability
- Starting new documentation with mkdocs

- Many Reliability improvements
- Prompt changes
- Initial changes for supporting multiple languages
- Fixing bug on task repeated execution
- Better execution error handling
- Updating READMe