test => different 1
test => distinct
refactoring => extract methods make the code clearify
refactoring => best practice from codewars
Merge branch 'sort_array_3' into master
add test into all-tests.html
test => return new object
test => extend objects
test => ignore existing properties
test => ignore existing properties even if is null
test => extend all passed objects
test => extend non-object
refactoring => best practice from codewars
refactoring => simplify code
Merge branch 'extend_object' into master
add test into all-tests.html
test => simple
test => composite
test => no functions
Merge branch 'compose_functions' into master