Support for grouping workers with MPI_Comm_split

This release features functionality to group workers by means of MPI_Comm_split operation.

Separation of development dependencies

This release separates the development dependencies in the package configuration.

Bug fix in spawn logic

This release fixes a bug in spawn functionality when nprocs_per_worker=1.

Updates to package information

This release adds some missing information fields to the package.

Poetry infrastructure

This release adds a poetry-based infrastructure for building, testing, and packaging.

Refactoring of informational messages

This release includes a refactoring of informational messages.

Addition of spawn_startup_wait option

This release adds option spawn_startup_wait to set a random wait time before spawning each worker.
Furthermore, it adds collective mode "sendrecv" based on async send/recv.

Addition of max_workers option

This release adds option max_workers, which can be used to set the number of workers to less than the size of world comm.

a927bAdditions of worker service and extended broker/worker comm patterns

This release adds additional features for using MPI accept/connect between collective workers and worker/broker communication patterns.

Initial working release

0.0.2

set version to 0.0.2