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

src/crewai/__init__.py

@@ -1,3 +1,4 @@
+import warnings
 from crewai.agent import Agent
 from crewai.crew import Crew
 from crewai.pipeline import Pipeline
@@ -5,4 +6,12 @@ from crewai.process import Process
 from crewai.routers import Router
 from crewai.task import Task
 
+
+warnings.filterwarnings(
+    "ignore",
+    message="Pydantic serializer warnings:",
+    category=UserWarning,
+    module="pydantic.main",
+)
+
 __all__ = ["Agent", "Crew", "Process", "Task", "Pipeline", "Router"]