Update to Kotlin 1.5.31 and other dependencies (#40)

Add simple sample app (#38)

Fixes #15

Update to release version of kotlinx serialization (#34)

Update to kotlinx serialisation 1.0.0-RC2 (#33)

* Update to latest serialisation library

* Use correct dependency for json

Update to Kotlin 1.4 and Gradle 6.6 (#28)

Update gradle scripts to Kotlin DSL (#27)

Update to main branch (#26)

Update docker image on circle-ci

Update to Kotlin 1.2.60 and androidx (#16)

Fixing job names for ci