Release v2.5.7

Author: GiovanniBussi

CHANGES/v2.5.md

@@ -228,7 +228,7 @@ For users:
 For developers:
 - Fixed a warning in `wrapper/Plumed.h` appearing with recent clang versions.
 
-## Version 2.5.7
+## Version 2.5.7 (Apr 16, 2021)
 
 For users:
 - Fixed handling of periodic variables in \ref ves_md_linearexpansion (see \issue{649}).

VERSION

@@ -5,4 +5,4 @@
 # (this is same as gromacs)
 # Notice that "plumed info --version" will return only 2.X
 # and "plumed info --long-version" will return the full string
-2.5.6
+2.5.7