* Removed build dependency libglib2.0-dev, thrown in via lxqt-build-tools
* Bumped build dependency lxqt-build-tools to >= 0.5.0~
* Renamed libfm-qt3 -> libfm-qt5. soname bumped
* Added Breaks and replaces for libfm-qt3
* Bumped years in copyright
* Messed around with symbols (gcc7/gcc8, removals, new symbols)