Interval Timer

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1.4.2: support landscape mode
1.4.0: unexpected crashes fixed
1.3.9: background service bug fixed
1.3.7: several bugs fixed
1.3.6: faster loading speed
1.3.0: translated into english
1.2.5: optimized all layouts
1.2.3: support high resolutions
1.2.2: applied new app icon
1.2.0: setting for max round
1.1.0: setting for time interval
1.0.2: applied new GUI
1.0.1: removed full screen mode
1.0.0: app launched