ae.utils.text: Optimize nullStringTransform for strings
ae.utils.text: Introduce "ascii" alias
ae.utils.iconv: Several improvements

- Improve documentation
- Fix "force" for "usascii"
- Make initialization program-global
- Use the new "ascii" alias
ae.sys.file: Add move
ae.utils.sini: Improve documentation
ae.utils.sini: Add a simple deserializer
ae.utils.sini: Replace arrays with associative arrays
ae.utils.time: DMD 2.063 immutability fix
ae.utils.json: Add pointer support