Ehoogerbeets

Updated for iLib, and added many new rows for various i18n features. Other libraries slots need to be updated to put the check marks for all these new features.
In the end, it's the ability to format/parse dates with timezone support, right? It certainly could be broken down into two or more different features, e.g.,:

- Numberic timezone support (e.g., GMT-3)
- IANA/Olson timezone support

PS: I'm not sure how we could name the conversion capability. Because, I see it as part of the mechanism in which the library will do the right formatting or parsing. The right format/parse values are what matters, which are subject to evaluation.

Anyway, are you ok moving it into `./date-format.md` / `./data-parse.md`?