Revision control
++ #! [1]
++ QT += widgets uiplugin
++ #! [1]
++
++ #! [0]
++ CONFIG += plugin
++ TEMPLATE = lib
++ #! [0]
++
++ #! [3]
++ TARGET = $$qtLibraryTarget($$TARGET)
++
++ target.path = $$[QT_INSTALL_PLUGINS]/designer
++ INSTALLS += target
++ #! [3]
++
++ #! [2]
++ HEADERS = analogclock.h \
++ customwidgetplugin.h
++ SOURCES = analogclock.cpp \
++ customwidgetplugin.cpp
++ OTHER_FILES += analogclock.json
++ #! [2]