Style preserving parser

[DrSensor]

Inspired from TOML Kit

• Just as the name suggests, I wonder if serde can preserve the order of key-value pair 🤔. This will make the transpiler more consistent and can be used to alter source code.

• Another use case is to generate Scdlang (Generate scdlang from other formats #22) from interchangeable format like SCXML or CSV (Generate state transition table #24).

Also, watch out if there is the performance penalty!