Merge pull request #18 from Olyol95/master

Subgroup1
Merge pull request #19 from Olyol95/master

Subgroup2
Merge pull request #21 from Olyol95/Subgroup3

Subgroup3
Updated notes
Merge pull request #22 from Olyol95/master

Subgroup1
Merge pull request #23 from Olyol95/Subgroup1

Subgroup1
Merge pull request #25 from Olyol95/Subgroup2

Merge pull request #19 from Olyol95/master
Merge pull request #26 from Olyol95/master

Subgroup3