Changes for version 0.18

Modules

Simple manager of asyncronous tasks
base class for asyncronous task packages
Forks child process. It waits for "data" whic will be passed via "put", and executed "sub" with this "data" as an argument. Result of execution will be returned to parent by "get".
Forks child process. It waits for "data" whic will be passed via "put", and executed "sub" with this "data" as an argument. Result of execution will be returned to parent by "get".