Add some comments
Bug fix on "set" function if 3 arguments and last is an array
Add possibility to have an array on last argument on infinite arguments mode
Simplify "set" function
Add possibility to have an array for last argument on infinite arguments
mode for "remove" method
Add possibility to have an array for last argument on infinite arguments
for isEmpty, isSet, remove methods
Simplify code
Update docs to 1.5.0
Update .min to 1.5.0