basil.reset() Doesn't clean cookies set with basel when invoked

[iliyanz]

I set basil with options:

var options = {
namespace: 'userData',
storages: [ 'sessionStorage' ,'cookie'],
storage: 'sessionStorage',
expireDays: 1
};

After I invoke one of these , basil doesn't clean the cookies that created and basil.keys() keeps keys of the data that was set:
basil.reset({'namespace': 'userData'});
basil.reset({'namespace': 'userData' , 'storages': [ 'sessionStorage' ,'cookie']});
basil.reset();

PS
Thank you for this library!