add contributor names of Eric Delaunay and Marc Strapetz

CONTRIBUTORS

@@ -134,6 +134,7 @@ Eli Tucker
 Emmanuel Bourg
 Eugène Adell
 Eric Barboni
+Eric Delaunay
 Eric Olsen
 Eric Pugh
 Erik Costlow
@@ -255,6 +256,7 @@ Maarten Coene
 Magesh Umasankar
 Maneesh Sahu
 Marc Guillemot
+Marc Strapetz
 Marcel Schutte
 Marcus Börger
 Mario Frasca 

contributors.xml

@@ -567,6 +567,10 @@
     <first>Eugène</first>
     <last>Adell</last>
   </name>
+  <name>
+    <first>Eric</first>
+    <last>Delaunay</last>
+  </name>
   <name>
     <first>Eric</first>
     <last>Olsen</last>
@@ -1060,6 +1064,10 @@
     <first>Marc</first>
     <last>Guillemot</last>
   </name>
+  <name>
+    <first>Marc</first>
+    <last>Strapetz</last>
+  </name>
   <name>
     <first>Marcel</first>
     <last>Schutte</last>