See _create_payload_file method

This can be avoided by -p

Credits to Aurelien Dunand

Thanks to Aurelien Dunand

Arrow is now relative this allow to pass context of arrow
no more verbose mode. Soft is verbose except in quiet mode

Script is now compiled before execution to have a better debugging features.
local directory is no more given for each scripts
global directory is new to each script execution
only namespace object must be used to share data across scripts