can add new exporters without changing the API.

raw driver. I know it is inconsistent to have the loader in libcucul
    and the exporter in libcaca but I'll find a way to harmonise that.

AHAHAH                      _
    _._ _..._ .-',     _.._(`))
   '-. `     '  /-._.-'    ',/
      ) MAIS    \            '.
     / _    _    |  JE         \
    |  a    a    /     SUIS     |
    \   .-.                     ;  
     '-('' ).-'       ,' UN    ;
        '-;           |      .'
           \    VIEUX  \    /
           | 7  .__  _.-\   \
           | |  |  ``/  /`  /
          /,_|  |   /,_/   /
             /,_/      '`-'

POOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOORC!

* Changed the line, box, ellipsis etc. prototypes so that they use an UTF-8
    string instead of a single character as their last argument.

operations on canvases.

onto the other with an optional mask.

that is a bit more high level than characters.

canvas size (use cucul_init(0, 0) for the old behaviour).

* Use a custom pow() function for gamma computation.

',_`""\        .---,    
                                           \   :-""``/`    |    
          Ahaha mais vieux porc !!          `;'     //`\   /    
                                            /   __     |   ('.  
                                           |_ ./O)\     \  `) \ 
                                          _/-.    `      `"`  |`
                                      .-=; `                  / 
                                     /o o \   ,_,           .   
                                     L._._;_.-'           .     
                                       `'-.`             '      
                                           `.         '         
                                             '-._. -'

Unicode characters are encountered.

in the PS exporter (vieux porc !).

*p_e_n_i_s_b_i_r_d_p_e_n_i_s_b_i_r_d_*
p______...___________________________p
e____(_..__`'-.,--,__________________e
n_____'-._'-.__`\a\\_________________n
i_________'.___.'_(|_________________i
s____________7____||_________________s
b___________/___.'_|_________________b
i__________/_.-'__,J_________________i
r_________/_________\________________r
d________||___/______;_______________d
*________||__|_______|_______________*
p________`\__\_______|__/__''\_______p
e__________'._\______/.-`____{}|_____e
n___________/\_`;_.-'_________/______n
i___________\_;(((____.--'\_/________i
s_________.(((_____.-;\______________s
b____.--'`_____,;`'.'-;\_____________b
i_taco's____.'____'._.'\\____________i
r_dick_--'_________|__\_|____________r
d__________________\_\,_/____________d
*p_e_n_i_s_b_i_r_d_p_e_n_i_s_b_i_r_d_*

* Got rid of static buffers; we now use cucul_free() to free exported
    buffers.
  * Fixed light background in the ANSI exporter by adding escape sequences for
    most terminal emulators.

cucul_putchar32() function but I'm not convinced it will be useful.

* Print a small message at kernel boot time just to check that the kernel
    was properly loaded.