v4.0.5 Bug fixes and improvements

Bugfixes:

• Fixed an issue with iPad Form Sheet where view was pulling down.
• Fixed next/previous ordering issue when textFields are in header of UITableView.

Improvements:

• Moved library files to development pods.
• Added method execution time print with debugging logs.

Features:

• Moved keyboardShowing readonly property for public use.
• Added movedDistance readonly property to get adjustment distance by library.

Documentation:

• Updated MANUAL MANAGEMENT.md with more examples.