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Merge pull request #125 from tariel/master

Update task links
Lecture 12 tasks added.
Lecture 10, task 3 done.
Merge pull request #126 from HeikkiAlanen/master

Lecture 12 tasks added. Lecture 10, task 3 done.
Forgot about tagging, #127
Add some of the missing assignments
Merge pull request #128 from olemstrom/master

Add some of the missing assignments etc
Added issue link
Merge pull request #129 from merilainen-metropolia/patch-2

Added issue link
Merge pull request #11 from paazmaya/master

Update
Update participation.md
Merge pull request #130 from jukra/master

Updated participation file
4th assignment, WIP
Fouth is done
Update participation.md
Merge remote-tracking branch 'upstream/master'
Discussion during class
Merge pull request #131 from tuunanen/master

Updated participation
Added issue link