4_4 and 4_5
Merge branch 'master' of https://github.com/marozau/cpp_craft_0314 into homework_4
Task5 implemented
- task 2
- fix task 2
Merge pull request #242 from blez/task5

Task5 implemented
Merge pull request #260 from vadimradyno/branch_2_2_1

Branch 2 2 1
Fixed bug in 4_5.
- Found local min and max and then used mutex for synchronization with global max and min
Merge branch 'master' of https://github.com/marozau/cpp_craft_0314
Merge pull request #266 from TereschenkovaEugeniya/homework_4

Homework 4 (Fixed bug in 4_5)
Merge branch 'homework_4'
Merge branch 'master' of https://github.com/marozau/cpp_craft_0314