Travis tests for v2.5.6

GiovanniBussi · GiovanniBussi · commit 701691ace6cb · 2020-10-24T00:05:50.000+02:00
diff --git a/CHANGES/v2.5.md b/CHANGES/v2.5.md
@@ -218,7 +218,7 @@ For users:
 For developers:
 - Small fix to avoid unique global symbols (see \issue{549})
 
-## Version 2.5.6 
+## Version 2.5.6 (coming soon)
 
 For users:
 - Report an error when using all weights set to zero in reference PDB files. Same as \issue{247} fixed in 2.4, but now the check is done in more cases.
