environment-related function moved to end
environment-related function moved to end

All environment/version related functions moved towards
the end of the file and grouped together

miscco/matlab2tikz,okomarov/matlab2tikz,egeerardyn/matlab2tikz,PeterPablo/matlab2tikz,nidrosianDeath/matlab2tikz,matlab2tikz/matlab2tikz,RPeschke/matlab2tikz,egeerardyn/matlab2tikz,matlab2tikz/matlab2tikz,okomarov/matlab2tikz,LJeub/matlab2tikz