Updated Readme.

3.4.2

Updated version to 3.4.2

Added `SPPopoverNavigationController`.

3.4.1

Added `SPPopoverNavigationController`.

Updated Readme.

3.4.0

Updated Readme.

Updated rounding corners function.

3.3.9

Fixed tv os compability.

Fixed date catalyst bug.

3.3.6

Fixed date catalyst bug.

Fixed appearance wrapper.

3.3.5

Updated version.

Added `SPNavigationBarAppearance`.

3.3.4

Fixed appearance for tv os.

Fixed mac compatibility.

3.3.2

Fixed mac compatibility.

Updated Readme.

3.3.1

Updated Readme.

Prepared to iOS 15.

3.3.0

Prepared to iOS 15.