Ran into few issues while evaluating SBE 1.8.1

1. Issues with JsonPrinter (would like to use it for logging/toolchain as it is faster than alternatives)

• Prints invalid JSON
• Drops enum and bool fields
• Rounds up numbers

2. IR Schema file

• Enum values are missing when using sbeir schema with SBE Tool to codegen

POC code is available on github here: https://github.com/aksharp/sbe-poc

Failing test
https://github.com/aksharp/sbe-poc/blob/master/src/test/scala/sbe/JsonComparison.scala