Request: merge develop into master and tag a new release

[xiota]

Please merge the develop branch into master and tag a new release.

The last release (1.2.0_beta2) was over a decade ago, in 2012. It is difficult to build on modern systems because Qt4 is no longer available in many repositories, as everyone long ago moved on to Qt5. Now some have started transitioning to Qt6. Would be a nice to tag a release before Qt6 is fully adopted and Qt5 abandoned.

To build on a modern system, the develop branch must be used. Perhaps the current master could be tagged 1.2.0. Then develop merged to master. Then another release tagged at 1.2.1 or 1.3.0?