test => parse binary string to number
test => sum
refactoring => using decimal() instead
fix bug => decimal
refactoring
Merge branch 'bit_calculator' into master
add test into all-tests.html
test => valid password
test => less than 6 characters long
test => contains non-alphanumeric characters
test => more than 6 characters is valid
test => must contains a lowercase letter
test => must contains a uppercase letter
test => must contains a digit
Merge branch 'regex_password_validator' into master
add test into all-tests.html
test => empty array
test => splice from to end
test => splice first
test => splice last