Curtis Alexander

Need tests for the following datasets: - [ ] `ahs2019n` - [ ] metadata - [ ] data - [ ] `all_types` - [ ] metadata - [x] data -...

Utilize [declarative macros](https://doc.rust-lang.org/book/ch19-06-macros.html) to simplify tests (same pattern over and over).

Partially implemented with #39 but will definitely require more work.

Next steps - Implement methodology to handle a SAS time - Implement all date, datetime, and time formats - https://documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=9.4_3.5&docsetId=leforinforref&docsetTarget=n0p2fmevfgj470n17h4k9f27qjag.htm&locale=en - Testing!

For a list of metadata to consider including, see the `dump_metadata` function from the `readstat` binary. https://github.com/WizardMac/ReadStat/blob/master/src/bin/readstat.c#L392

Expanded metadata as part of #38

This is a good idea and something I would consider as part of next release. My time spent working on this software is quite limited and so it may be...