Enable updater on Mac.
Merge branch '0.3' of gitcafe.com:liuyanghejerry/painttyWidget into 0.3
Don't show dock icon when updater is loaded.
Auto kill updater when main apllication quit.
add: one more notification.

Signed-off-by: liuyanghejerry <liuyanghejerry@126.com>
Merge branch '0.3' of gitcafe.com:liuyanghejerry/painttyWidget into 0.3
Merge branch '0.3' into dev
change: show dialog before updater;
add: timeout for updater.

Signed-off-by: liuyanghejerry <liuyanghejerry@126.com>
Introduce a pri to improve building and coding experience.
Merge branch '0.3' into dev