test => redraw
refactoring => extract self variable & merge variable definition
Merge branch 'rotary'
test => encode
test => decode
refactoring => extract transform function
refactoring => extract transformer factory object make transorm functions
refactoring => unknown entity will be reserved
Merge branch 'init' into operator_overload
Merge branch 'operator_overload'
Merge branch 'simple_substitution_cipher_helper' into master
add test into all-tests.html
test => sum
test => creation
best practive from codewars
Merge branch 'operator_overload'