* Types: Add Number type
* Types: Switch StringToFloat64 for Number
This change mostly just renames the type.
convert package and StringToFloat64 represent actions, not types,
and make it misleading to use outside of the API context,
especially when using it for a Float64ToString operation.
* Common: Remove StringToFloat64
Replaced by types.Number
* fixup! Types: Switch StringToFloat64 for Number
Second pass at Okx
* Spellcheck: Fix whitespace handling for okx line