CB switch v 0.2
switch problem with no-default inner switch solved
CB IF v 0.1
Merge pull request #17 from Podmev/master

Inc and Dec operations.
more fixes to switch
merged with zabranskiy/djlab/master
if printing fixed
Merge pull request #18 from vapolyakov/master

Constructions printing fix; switch small fix
Merge remote-tracking branch 'upstream3/master'