CEDS Crosswalk Function goals

[jknowles]

The package should be able to seamlessly convert:

• CEDS variable (columns) to SDP variable (columns) names
• CEDS values (e.g. option sets) to SDP option sets
• SDP columns to CEDS or CEDS-like columns
• SDP option sets to CEDS option sets

User should be able to specify lookups and replacements, but not have to.

[jknowles]

• [ ] Cut this out and move it to the CEDSr package

[wbuchanan]

@jknowles Is there a data dictionary being created and/or functions being written to generate a dictionary from the simulated data? If there's a way to bind the metadata to the return object without adding too much bloat or build a method that can be called on the return object it might make it more robust to updates moving forward as well.