Sergei-Levshnia/homework: Nix-study-course homeworks @ 1b9c82bc780030322de3d295adf78986021ed685

Nix-study-course homeworks

miskson 1b9c82bc78 additional task done, all tasks now wrapped up in switch. Redundant .toLocaleLowerCase() changed to .toLowerCase()		%!s(int64=3) %!d(string=hai) anos
hw1	272d299697 lil' minimization of code	%!s(int64=3) %!d(string=hai) anos
hw2	c1e2f69805 logic of files changed. files with task2 now moved to separate folder(task2 of hw2 became hw3)	%!s(int64=3) %!d(string=hai) anos
hw3	1b9c82bc78 additional task done, all tasks now wrapped up in switch. Redundant .toLocaleLowerCase() changed to .toLowerCase()	%!s(int64=3) %!d(string=hai) anos