BUG: Vector encoding breaks MonteCarlo export. (#704)

* BUG: Vector encoding breaks MonteCarlo export.

* MNT: add changes to CHANGELOG.

* ENH: make the Matrix class JSON serializable

---------

Co-authored-by: Gui-FernandesBR <[email protected]>

Author: phmbressan

CHANGELOG.md

@@ -40,7 +40,7 @@ Attention: The newest changes should be on top -->
 
 ### Fixed
 
-- 
+- BUG: Vector encoding breaks MonteCarlo export. [#704](https://github.com/RocketPy-Team/RocketPy/pull/704)
 
 ## [v1.6.0] - 2024-09-29
 

rocketpy/mathutils/vector_matrix.py

@@ -418,6 +418,10 @@ def k():
         """Returns the k vector, [0, 0, 1]."""
         return Vector([0, 0, 1])
 
+    def to_dict(self):
+        """Returns the vector as a JSON compatible element."""
+        return list(self.components)
+
 
 class Matrix:
     """Pure Python 3x3 Matrix class for simple matrix-matrix and matrix-vector
@@ -998,6 +1002,10 @@ def __repr__(self):
             + f"       [{self.zx}, {self.zy}, {self.zz}])"
         )
 
+    def to_dict(self):
+        """Returns the matrix as a JSON compatible element."""
+        return [list(row) for row in self.components]
+
     @staticmethod
     def identity():
         """Returns the 3x3 identity matrix."""