v1.15.1

Package Semaphore

- add capabilities to create semaphore with more weighted thant physical thread
- to limit thread to physical thread use SetSimultaneous function
- add capabilites to use unlimited sync process (waitgroup)
- update process following
- add subpackage to create good semaphore/waitgroup instance

Package Encoding:

- add sub package randRead to allow expose random reader from remote source like http request
- add unit test for randReader

Package AWS:

- groups: add new function walk to list and call custom function on each found group
- role: add new function walk to list and call custom function on each found role 
- role: add new function to detach all attached policy linked on each found role 
- user: add new function walk to list and call custom function on each found user 
- user: add new function to detach all attached policy linked on each found user 
- policy: add new function walk to list and call custom function on each found policy
- policy: add new function to retrieve all ARN policy who's matching given prefix of not empty