Removing LangChain and Rebuilding Executor (#1322)

* rebuilding executor

* removing langchain

* Making all tests good

* fixing types and adding ability for nor using system prompts

* improving types

* pleasing the types gods

* pleasing the types gods

* fixing parser, tools and executor

* making sure all tests pass

* final pass

* fixing type

* Updating Docs

* preparing to cut new version

docs/how-to/Kickoff-async.md

@@ -72,7 +72,7 @@ asyncio.run(async_crew_execution())
 
 ## Example: Multiple Asynchronous Crew Executions
 
-In this example, we'll show how to kickoff multiple crews asynchronously and wait for all of them to complete using asyncio.gather():
+In this example, we'll show how to kickoff multiple crews asynchronously and wait for all of them to complete using `asyncio.gather()`:
 
 ```python
 import asyncio
@@ -114,4 +114,4 @@ async def async_multiple_crews():
 
 # Run the async function
 asyncio.run(async_multiple_crews())
-```
+```