5.4.0

Added:

• Public: Face property added into Captures class
• Public: Added sample-app directory, in order to show sample usage of the sdk
• UI: Added folded document template for French driving license and Italian identity document
• UI: Updated README.md to clarify mobile token usage

Changed:

• Internal: Updated Kotlin version to 1.3.50
• UI: Changed camera overlay background color's opacity to enhance accessibility support