implement TaskCategory
implement TaskExecutor
implement ExecutionBuilder and add execute() methods
implement corteges
add sticky/non-sticky listeners
add uncaught exception handler
implement Call, Exec, Getter
implement calls and tasks for multiple arguments
implement execute() and prepare() for tasks with multiple and array arguments
implement AbstractTaskExecutor
implement AbstractTaskCategory
implement AbstractTaskExecutor
implement AbstractTaskCategory
implement SimpleTaskEnvironment
simplify classes
make SimpleTaskEnvironment generic
add drafts
implement AbstractExecutionBuilder
implement AbstractTaskExecutor
implement AbstractTaskSet