Doesn't support all primitive types #9

"Primitives" as a term doesn't even actually show up in python - the closest is some mention to "basic types". Using the Python JSON docs as an example, the main types not currently supported that probably need to be added are tuples, and possibly int/float Enums. Both of these types present problems in that they'll need an equivalent of the class keys, for instance because both lists and tuples would otherwise get turned into an array by JSON, and lose their type.

The docs probably also need an update to include an actual list of supported types.

This will need a review of potential serialisation targets and their supported types, as this is the main purpose of Preserve. Will need to specifically look at conversion tables to make sure type information doesn't get lost and types don't get conflated.

Fundamentally, this not only needs to allow compatibility with other serialisers, but we need to make sure that any raw types (types that are passed directly through) will appear to be the same type when restoring - for instance in Python JSON, converting a tuple to JSON and then back again will coerce it into a list.

This should all be solved be adding a more flexible/generic configurable type system in Preserve.

Conversion table for python<->JSON (source) :

Python	JSON
dict	object
list	array
str	string
int	number (int)
float	number (real)
bool	boolean

Conversion table for python<->TOML (source) :
(note that there's complications here with structure limits - namely that the root must be a table)

Python	TOML
dict	table
list	array
str	string
int	integer
float	float
bool	boolean

Support for extra types moved to #12