Merge branch 'v2.4' into v2.5

CHANGES/v2.3.md

@@ -254,7 +254,7 @@ For users:
 - Fixed flag DETAILED_TIMERS in \ref DEBUG (flag was ignored and detailed timers always written).
 - Small fix in \ref DUMPMASSCHARGE (atoms are now correctly requested only at first step).
 
-## Version 2.3.8 ()
+## Version 2.3.8 (Dec 19, 2018)
 
 \plumednotmaintained
 

CHANGES/v2.4.md

@@ -201,7 +201,7 @@ For users:
   - Module VES: Fixed a bug in TD_GRID for 2D grids where the grid spacing is not the same for both dimensions.
   - GROMACS patch for gromacs-2018.3.
 
-## Version 2.4.4 (to be released)
+## Version 2.4.4 (Dec 19, 2018)
 
 For users:
   - Fixed some performances regression issue with OpenMP