Bck2Brwsr 0.20

From APIDesign

This is so called Radtouren 2017 version, as it has been prepared and released while our gang was on bicycling trip in Korutany. Sleeping in a tent in camps, bicycling whole day, coding in a morning. What can be more fun?

• Support for Html/Java API version 1.4
• Build & tests succeed on GraalVM
• Few bugfixes
  • Support for NOP instruction
  • Can execute some Kotlin code
• Implementation of ClassValue