V0.0.8[*] & V2.1.0[+]

+Set scene background as green
+Change application name as GreenSchedule
+Start new iteration
V0.0.8[*] & V2.1.1[+]

+Add CColorTagWidget to edit goal's tag color
+Add data model classes: CPlan and CPlanTimeHour
+Optimize the communication between CDayWidget and CPlanWidget
+Refine CDayWidget
+Refine CMonthWidget
+Refine UI