a file and a memory area into a libcucul buffer.
  * Changed the cucul_import_canvas() prototype so that it uses libcucul
    buffers instead of simple memory areas.

sequences longer than 100 characters.
  * Documented the escape sequence format.

intermediate bytes.

* Started changing function prototypes so that they return an integer
    instead of void, just in case they might fail.

a nicer cross compilation check.

* Implement htons/htonl in common.h just in case.

in all .c files that needed it.

from some systems.

whether we want plain ASCII, UTF-8, or CP437.