frequent screen refreshes.
Implement <conio.h> clreol() (incomplete) and <dos.h> sleep() functions.
Replace some defines with enums in <caca_conio.h>.

a call to clrscr().

printed cells instead of always returning 0. This is handy if we want to
advance a cursor after each printf() call.

they're not actually from that header, they're often used together.

caca_wherey(), in order to match the old <conio.h> naming scheme.

for now because it does not work with fullwidth characters.

speedups when the calling application knows the dirty rectangle covered by
a complex operation.

display driver to clean up its shit. Fixed X11 driver accordingly.

cases, but that can be fixed.

attached to it.

one dirty rectangle, but this is the first step to improvement.

lines, or on changed chars if we have a mask

different from what was already there.

current canvas. This is useful to export dirty rectangles. Accordingly,
add caca_import_area_from_memory() and caca_import_area_from_file().

a more natural (x,y,w,h) 4-tuple to handle.

to keep source files under 1,000 lines of code.

their crap all over the place. There is still caca-sharp/obj
that it insists on creating (reported as Connect ID 301965).

we have dirty rectangles, fast autorepeat becomes perfectly usable.

back to the libcucul merge.

currently dirty rectangles.

inner implementation still only handles one dirty rectangle, but this way
we can prepare supporting applictions for the future.

on Win64, including the .NET projects.

lesson to you: unit tests are good.

that anything outside the dirty rectangle is guaranteed to be unchanged, but
we currently mark far too many cells as dirty. This must be optimised.