The commonly-used "struct iofd" was pushed into the library, along with the respective iofd_close, iofd_getchar, iofd_open, and iofd_rew functions. The iostdout_putchar and iostdout_puts convenience functions were also added for outputting to stdout.
Hcache functionality was added, which deprecates the htmlc utility. Hcaches are extremely useful, allowing, for example, consolidating pages in multiple languages or different styles under uniform numeric identifiers.
