Logo update (#696)

* update logo

* bump version from 0.2.4 to 0.2.5

Author: dario-coscia

README.md

@@ -7,8 +7,8 @@ SPDX-License-Identifier: Apache-2.0
 <table>
   <tr>
     <td>
-      <a href="https://github.com/mathLab/PINA/raw/master/readme/pina_logo.png">
-        <img src="https://github.com/mathLab/PINA/raw/master/readme/pina_logo.png"
+      <a href="readme/pina_logo.png">
+        <img src="readme/pina_logo.png"
              alt="PINA logo"
              style="width: 220px; aspect-ratio: 1 / 1; object-fit: contain;">
       </a>

docs/source/index_files/PINA_logo.png

@@ -1,6 +1,6 @@
 [project]
 name = "pina-mathlab"
-version = "0.2.4"
+version = "0.2.5"
 description = "Physic Informed Neural networks for Advance modeling."
 readme = "README.md"
 authors = [