Quantum ESPRESSO v. 6.8

Merging last changes into master 30/11/2020

Final version of qe-6.7 release of Quantum ESPRESSO

releasing qe-6.7 version of the code.

Quantum ESPRESSO version 6.6

Official Tag for the production version 6.5 of Quantum ESPRESSO

This the 6.5MaX release of Quantum Espresso

New minor release mostly containing bug fixes

Quantum espresso version 6.4

Final release of version 6.3