shipunov 1.2:
 updated packages: biokey, flower, numerus, etiketka;
 corrected authorship lines in other packages;
 corrected documentation and examples;
 added documentation: lecture slides, exam sheets templates;
 added packages: add2, dline, textfrac;
 added scripts: abs2rel.pl, txt2qq.pl;
 'rusnat.bst' is now deprecated.

shipunov 1.1:
 added installation information under MikTeX;
 updated autolist (Rpolylist, thanks to M. Muench);
 updated flower (new symmetry signs according to Prenner et al., 2010)