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)