Fix overscroll on TimelineContainer

Fix overscroll on TimelineContainer
PR: #135, issue #127

Bugfix: crash if current date is close to the New Year

Fixed issue described in #128:
CalendarKit is crashing on new year. The DayHeaderView is not getting set correctly and when we navigate by swiping left or right, the app crashes.

Improve integration

1. Made a number classes, properties and functions public to cater for different users' needs
2. Added example with a Notification view

12/24 hour support

1. 12/24 hour support, #86

Swift 4

0.2.0

Add .swift-version file

Support for custom fonts and attributed text

1. Added support for custom fonts #82
2. Added support for attributed text to EventView #88
3. Fixed date calculation issue

Last release with Swift 3.

Route date selection through state

1. Route date selection through state (in header):
   Now selecting a particular day in header triggers method call in DayViewState which updates the header.
   This change fixed bugs #71, #55, #77. Now it is possible to configure DayView with any desired date as well as jump between dates.
2. Fix for #75 by setting default color for the event.

All the relevant changes has been made in pull request #78

Fix empty screen when scrolling, Fix text clipping

1. Fixed bug when sometimes Timeline was empty after user has navigated the calendar
2. Fixed bug when text in UITextView could be clipped because of the view reuse.
   Relevant SO question:
   https://stackoverflow.com/questions/18696706/large-text-being-cut-off-in-uitextview-that-is-inside-uiscrollview

0.1.19: Merge pull request #69 from richardtop/remove-dynamic-color

1. Introduce shared state
2. Remove Dynamic Color dependency

Bugfixes

1. When preparing event views, start by releasing all existing event views
2. Decouple Timeline from DayView
3. Simplify TimeChunk initializer
4. Fix autoscroll not working
5. Fix Overlapping Events Not Being Detected