Updated changelog [ci skip]

debian/changelog

@@ -5,7 +5,7 @@
   [Michele Simionato]
   * Extended rupture_dict to the `msr` and `aspect_ratio` parameters
   * Fixed the instantiation of file-dependent GMPEs from the datastore
-  * Optimized slow tasks in the preclassical phase
+  * Optimized slow tasks both in the preclassical and the classical phase
   * Reading the site model in calculations with ruptures.hdf5 and making
     `minimum_intensity` mandatory
   * Added parameter `minimum_engine_version`