Public DataSource/Delegate for DayView

Public DataSource/Delegate for DayView

Refactoring & correcting errors

Improved code readability,
Corrected minor errors accumulated during Swift migrations.

Styles support and bug fix

Added styles support #17
Fixed layout bug @Rich86man, #16 #15

Migrate project to DateToolsSwift

Migrate project to DateToolsSwift

Initial release

Initial release of CalendarKit