New exercise: crypto-square
Merge pull request #41 from betegelse/crypto-square

New exercise: crypto-square
New exercise: strain
Merge pull request #42 from betegelse/strain

New exercise: strain
New exercise: accumulate
Merge pull request #43 from betegelse/accumulate

New exercise: accumulate
New exercise: proverb
Add kindergarten-garden exercise
Merge pull request #44 from betegelse/proverb

New exercise: proverb
Merge pull request #17 from sjakobi/kindergarten-garden

Add kindergarten-garden exercise
New exercise: sublist
Merge pull request #40 from betegelse/sublist

New exercise: sublist
New exercise: queen-attack