Exercises for the Mastering Kotlin Refactoring workshop

Conference Signup: refactor from mutable "bean" to algebraic data type and functions
Boat Maintenance Log: refactor serialised classes, requiring a strategy to cope with different versions of the data
Cycle Race Leaderboard: refactoring Kotlin code & database schema, requiring multiple expand/contract deployments to apply the change without downtime

Prerequisites

Before the workshop, install the following: