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/getting-started/Create-a-New-CrewAI-Pipeline-Template-Method.md

@@ -71,25 +71,59 @@ To customize your pipeline project, you can:
 3. Modify `src/<project_name>/main.py` to set up and run your pipelines.
 4. Add your environment variables into the `.env` file.
 
-### Example: Defining a Pipeline
+## Example 1: Defining a Two-Stage Sequential Pipeline
 
-Here's an example of how to define a pipeline in `src/<project_name>/pipelines/normal_pipeline.py`:
+Here's an example of how to define a pipeline with sequential stages in `src/<project_name>/pipelines/pipeline.py`:
 
 ```python
 from crewai import Pipeline
 from crewai.project import PipelineBase
-from ..crews.normal_crew import NormalCrew
+from ..crews.research_crew.research_crew import ResearchCrew
+from ..crews.write_x_crew.write_x_crew import WriteXCrew
 
 @PipelineBase
-class NormalPipeline:
+class SequentialPipeline:
     def __init__(self):
         # Initialize crews
-        self.normal_crew = NormalCrew().crew()
+        self.research_crew = ResearchCrew().crew()
+        self.write_x_crew = WriteXCrew().crew()
 
     def create_pipeline(self):
         return Pipeline(
             stages=[
-                self.normal_crew
+                self.research_crew,
+                self.write_x_crew
+            ]
+        )
+
+    async def kickoff(self, inputs):
+        pipeline = self.create_pipeline()
+        results = await pipeline.kickoff(inputs)
+        return results
+```
+
+## Example 2: Defining a Two-Stage Pipeline with Parallel Execution
+
+```python
+from crewai import Pipeline
+from crewai.project import PipelineBase
+from ..crews.research_crew.research_crew import ResearchCrew
+from ..crews.write_x_crew.write_x_crew import WriteXCrew
+from ..crews.write_linkedin_crew.write_linkedin_crew import WriteLinkedInCrew
+
+@PipelineBase
+class ParallelExecutionPipeline:
+    def __init__(self):
+        # Initialize crews
+        self.research_crew = ResearchCrew().crew()
+        self.write_x_crew = WriteXCrew().crew()
+        self.write_linkedin_crew = WriteLinkedInCrew().crew()
+
+    def create_pipeline(self):
+        return Pipeline(
+            stages=[
+                self.research_crew,
+                [self.write_x_crew, self.write_linkedin_crew]  # Parallel execution
             ]
         )
 
@@ -126,4 +160,4 @@ This will initialize your pipeline and begin task execution as defined in your `
 
 Pipelines can be deployed in the same way as regular CrewAI projects. The easiest way is through [CrewAI+](https://www.crewai.com/crewaiplus), where you can deploy your pipeline in a few clicks.
 
-Remember, when working with pipelines, you're orchestrating multiple crews to work together in a sequence or parallel fashion. This allows for more complex workflows and information processing tasks.
+Remember, when working with pipelines, you're orchestrating multiple crews to work together in a sequence or parallel fashion. This allows for more complex workflows and information processing tasks.