PE-48: Add problem description
PE-49: Add problem description
Update comment on function `MakeSieveBackedIsPrime`
PE-48: Add solution
PE-49: Add anagram test function
PE-49: Add solution
Merge branch 'PE-49'
PE-47: Add problem description
PE-47: Add `MakeSieveBackedDecompose` function
PE-47: Add solution
PE-47: Add verified answer to unit test
Merge branch 'PE-47'
PE-48: Add verified answer to unit test
Merge branch 'PE-48'