Merge branch 'master' of https://github.com/alandefreitas/matplotplusplus

Author: alandefreitas

README.md

@@ -150,9 +150,10 @@ Data visualization can help programmers and scientists identify trends in their
 - [Integration](#integration)
   - [CMake](#cmake)
   - [Install](#install)
-- [Contributing](#contributing)
+- [Community](#community)
+  - [Getting involved](#getting-involved)
   - [Ideas and Roadmap](#ideas-and-roadmap)
-  - [Guidelines](#guidelines)
+  - [Contributing Guidelines](#contributing-guidelines)
   - [Contributors](#contributors)
 - [References](#references)
 
@@ -9259,85 +9260,85 @@ If contributing to the documentation, please edit [`README.md`](README.md) direc
 <tr>
     <td align="center">
         <a href="https://github.com/alandefreitas">
-            <img src="https://avatars0.githubusercontent.com/u/5369819?v=4" width="100;" alt="alandefreitas"/>
+            <img src="https://avatars.githubusercontent.com/u/5369819?v=4" width="100;" alt="alandefreitas"/>
             <br />
             <sub><b>Alan De Freitas</b></sub>
         </a>
     </td>
     <td align="center">
         <a href="https://github.com/mrexodia">
-            <img src="https://avatars2.githubusercontent.com/u/2458265?v=4" width="100;" alt="mrexodia"/>
+            <img src="https://avatars.githubusercontent.com/u/2458265?v=4" width="100;" alt="mrexodia"/>
             <br />
             <sub><b>Duncan Ogilvie</b></sub>
         </a>
     </td>
     <td align="center">
         <a href="https://github.com/lacc97">
-            <img src="https://avatars1.githubusercontent.com/u/23489037?v=4" width="100;" alt="lacc97"/>
+            <img src="https://avatars.githubusercontent.com/u/23489037?v=4" width="100;" alt="lacc97"/>
             <br />
             <sub><b>Luis CC!ceres</b></sub>
         </a>
     </td>
     <td align="center">
         <a href="https://github.com/actions-user">
-            <img src="https://avatars1.githubusercontent.com/u/65916846?v=4" width="100;" alt="actions-user"/>
+            <img src="https://avatars.githubusercontent.com/u/65916846?v=4" width="100;" alt="actions-user"/>
             <br />
             <sub><b>Actions-user</b></sub>
         </a>
     </td>
     <td align="center">
         <a href="https://github.com/xnorpx">
-            <img src="https://avatars2.githubusercontent.com/u/302709?v=4" width="100;" alt="xnorpx"/>
+            <img src="https://avatars.githubusercontent.com/u/302709?v=4" width="100;" alt="xnorpx"/>
             <br />
             <sub><b>Marcus Asteborg</b></sub>
         </a>
     </td>
     <td align="center">
         <a href="https://github.com/madronalabs">
-            <img src="https://avatars3.githubusercontent.com/u/1434276?v=4" width="100;" alt="madronalabs"/>
+            <img src="https://avatars.githubusercontent.com/u/1434276?v=4" width="100;" alt="madronalabs"/>
             <br />
             <sub><b>Randy Jones</b></sub>
         </a>
     </td></tr>
 <tr>
     <td align="center">
         <a href="https://github.com/sammi">
-            <img src="https://avatars0.githubusercontent.com/u/189128?v=4" width="100;" alt="sammi"/>
+            <img src="https://avatars.githubusercontent.com/u/189128?v=4" width="100;" alt="sammi"/>
             <br />
             <sub><b>Sammi</b></sub>
         </a>
     </td>
     <td align="center">
         <a href="https://github.com/leha-bot">
-            <img src="https://avatars1.githubusercontent.com/u/10153298?v=4" width="100;" alt="leha-bot"/>
+            <img src="https://avatars.githubusercontent.com/u/10153298?v=4" width="100;" alt="leha-bot"/>
             <br />
             <sub><b>Alex</b></sub>
         </a>
     </td>
     <td align="center">
         <a href="https://github.com/dimztimz">
-            <img src="https://avatars0.githubusercontent.com/u/6236568?v=4" width="100;" alt="dimztimz"/>
+            <img src="https://avatars.githubusercontent.com/u/6236568?v=4" width="100;" alt="dimztimz"/>
             <br />
             <sub><b>Dimitrij Mijoski</b></sub>
         </a>
     </td>
     <td align="center">
         <a href="https://github.com/MaBnt">
-            <img src="https://avatars2.githubusercontent.com/u/28400222?v=4" width="100;" alt="MaBnt"/>
+            <img src="https://avatars.githubusercontent.com/u/28400222?v=4" width="100;" alt="MaBnt"/>
             <br />
             <sub><b>MaBnt</b></sub>
         </a>
     </td>
     <td align="center">
         <a href="https://github.com/kaffehalv">
-            <img src="https://avatars1.githubusercontent.com/u/33203776?v=4" width="100;" alt="kaffehalv"/>
+            <img src="https://avatars.githubusercontent.com/u/33203776?v=4" width="100;" alt="kaffehalv"/>
             <br />
             <sub><b>Niclas Wall Wennerdal</b></sub>
         </a>
     </td>
     <td align="center">
         <a href="https://github.com/acxz">
-            <img src="https://avatars2.githubusercontent.com/u/17132214?v=4" width="100;" alt="acxz"/>
+            <img src="https://avatars.githubusercontent.com/u/17132214?v=4" width="100;" alt="acxz"/>
             <br />
             <sub><b>Akash Patel</b></sub>
         </a>