Address error : definition of implicit copy assignment operator...

Errors of the type

error: definition of implicit copy assignment operator for 'xxxxxx' is deprecated because it has a user-declared copy constructor [-Werror,-Wdeprecated-copy]

assigned to @jsola

created merge request !421 (merged) to address this issue

mentioned in merge request !421 (merged)

closed with merge request !421 (merged)

mentioned in commit 14e63344