Merge pull request #195 from someone328/master

lvl 16 solution
colorful lvl13 solution by kerzol
fix #183
fix #189
fix #197
Merge branch 'master' of github.com:AlexNisnevich/untrusted
Update 20_bossFight.md
flooring x and y in map methods
Merge branch 'master' of github.com:AlexNisnevich/untrusted