Improve FormattingTextField

• Fix caret position when pasting text into FormattingTextField
• Add ability to use masks with underscores instead of digits
• Deprecate setFormattedText method
• Refactor examples; showcase Combine integration

Improve FloatingLabelTextField

• showCaret property of OTPCodeField is now true by default
• more customisations for FloatingLabelTextField
• add border and background color 'a-la material design' to FloatingLabelTextField
• fix rightView and leftView appearance in FloatingLabelTextField

Update README

1.1.1

Improve FloatingLabelTextField

1.1.0