New and improved features

A feature-limited version of the PLUMED interface is available

A basic version of the PLUMED interface is now bundled by default in GROMACS. With a non-Windows installation, it is possible to invoke PLUMED directly from the command line using the -plumed option of the gmx mdrun command, followed by the path to a PLUMED input file. This can be done without the need to apply a patch as in previous GROMACS versions. Importantly, this interface is not feature complete, see the section in the manual for the details.